Category: Sleep Systems

Car camping lets you bring more comfortable sleeping gear than backpackers. Two popular options are camping cots and air mattresses. Each has strengths and drawbacks, and the right choice depends on your comfort preferences, tent size and the temperatures you expect.

This guide compares cots and air mattresses so you can decide what works best for you.

Camping Cots

A camping cot is a raised, collapsible bed frame with fabric stretched across it.

Pros

• Off the ground: Keeps you away from cold, damp and uneven ground.
• Easy to get in and out of, which can be helpful for people with mobility concerns.
• Storage underneath for bags and shoes.
• No inflation and no risk of punctures.
• Durable with care.

Cons

• Bulky and heavy compared with pads.
• Can feel cold underneath, because air circulates below you. A pad on top helps.
• Takes up floor space and requires headroom in the tent.
• Firm feel that some people dislike.
• Can damage tent floors if legs are sharp. Some cots have protective feet.

Air Mattresses

Air mattresses are inflatable beds, often similar to those used for guests at home.

Pros

• Comfortable, especially for those who like a bed-like feel.
• Available in large sizes like queen, good for couples.
• Packs down reasonably small.
• Adjustable firmness.

Cons

• Can feel cold. Large volumes of uninsulated air cool overnight.
• Prone to punctures and leaks.
• Need a pump.
• May lose air overnight as the air cools and the material stretches.
• Bouncy for couples when one person moves.

Comparison Table

Factor	Cot	Air Mattress
Comfort	Firm, stable	Soft, bed-like
Warmth	Needs a pad underneath you	Needs insulation on top
Setup	Unfold and assemble	Inflate with pump
Puncture risk	None	Yes
Size options	Mostly single	Single to queen
Tent space	Needs headroom	Takes floor space

Staying Warm on a Cot

• Place an insulated sleeping pad on top of the cot. See our sleeping pad buying guide.
• Use a sleeping bag rated for expected temperatures. See sleeping bag temperature ratings.

Staying Warm on an Air Mattress

• Put a blanket or insulated layer on top of the mattress, under you.
• Place a foam pad or blanket underneath the mattress for extra insulation.
• Use an appropriate sleeping bag.

Preventing Air Mattress Problems

• Use a footprint or ground cloth under the tent and clear sharp objects.
• Inflate fully, then top off in the evening after the air adjusts to the cooler temperature.
• Bring a pump that works at camp, such as a rechargeable or 12V pump. See portable power stations for camping.
• Pack a repair kit.

Tent Considerations

• Cots: Check tent peak height and wall shape. Cabin-style tents with vertical walls fit cots better.
• Air mattresses: Check floor dimensions, especially for queen sizes. See best 4-person tents.

Other Options

• Self-inflating camp mattresses: Thick foam and air pads designed for car camping.
• Foam mattresses: Comfortable and insulating, but bulky.
• Sleeping in your vehicle: Some campers use car mattresses or platforms.

Which Should You Choose?

Choose a Cot If You:

• Have trouble getting up from the ground
• Want to stay off cold or uneven ground
• Prefer a firm, stable surface
• Have a tent with headroom

Choose an Air Mattress If You:

• Want a soft, bed-like feel
• Camp as a couple and want a large bed
• Have limited tent headroom
• Camp in mild temperatures, or plan to add insulation

Setting Up for Comfort

Whichever you choose, a few habits help:

• Set up your bed early so you are not inflating a mattress or assembling a cot in the dark.
• Check level ground, since even a slight slope can make you slide.
• Bring your pillow from home if space allows.
• Use a sheet or blanket for a more home-like feel.

Budget and Durability

Basic air mattresses are often inexpensive but may be less durable than thicker camping-specific models. Cots range from basic steel frames to lightweight aluminum designs. When comparing products, look at the weight limit, material thickness, warranty and replacement parts. Reading recent owner reviews from several sources can help you understand common problems such as leaks or broken frames.

Using Both Together

Some campers use a cot with a self-inflating pad on top for warmth and comfort, or an air mattress with a foam pad underneath for insulation. Combining options lets you tailor your sleep setup to the season.

Questions to Ask Before Buying

• How much headroom and floor space does your tent have?
• Do you need a single or double bed?
• Will you have a way to inflate a mattress at camp?
• Do you have trouble getting up from the ground?

Storing Cots and Mattresses

Clean and dry cots and air mattresses before storing them. Store air mattresses loosely folded in a cool, dry place away from sharp objects and rodents. Check cot frames for bent legs or loose joints before each season, and replace worn parts if the manufacturer sells them.

Frequently Asked Questions

Are cots warmer than air mattresses?

Neither is inherently warm. Both need insulation from a pad or blanket.

Why does my air mattress lose air overnight?

Air cools and contracts in cold temperatures, and the material stretches. Top off the air in the evening.

Can two people sleep on a cot?

Most cots are designed for one person. Some double cots exist.

Do cots damage tent floors?

Cot legs can wear tent floors. Look for cots with protective feet or place a pad underneath.

Is a sleeping pad better than both?

Pads are lighter and insulating. Thick camp pads can be very comfortable for car camping.

The Bottom Line

Cots keep you off the ground and are stable and easy to get in and out of, while air mattresses provide a soft, bed-like feel and come in larger sizes. Both need insulation for warmth. Choose based on comfort, tent size, temperatures and convenience.

---

Editorial note: Camp Craftly is independent and reader-supported. This guide is based on research into manufacturer documentation, published specifications and widely accepted best practices; we have not been paid to mention any product. If we add affiliate links in the future, they will be clearly disclosed per our Affiliate Disclosure.

Sleeping bag temperature ratings can be confusing. A bag labeled “20°F” might keep one person cozy and leave another shivering. Understanding what ratings mean helps you choose a bag that keeps you warm on your trips.

This guide explains sleeping bag temperature ratings, insulation types, shapes and tips for sleeping warmer.

Standardized Temperature Ratings

Many manufacturers test sleeping bags using standardized methods:

• EN 13537: An older European standard.
• ISO 23537: The international standard that replaced EN 13537 in many markets.

These tests use a heated mannequin in a controlled environment to estimate warmth. They provide a consistent way to compare bags across brands that use them.

The Ratings

Standardized ratings typically include:

• Comfort rating: The temperature at which a “standard” person who sleeps relatively cold may sleep comfortably in a relaxed position.
• Limit rating (lower limit): The temperature at which a “standard” person who sleeps relatively warm may sleep curled up for several hours without feeling cold.
• Extreme rating: A survival rating indicating risk of hypothermia. It is not a comfort target. Some newer labels omit or de-emphasize it.

Many bags are named after their limit rating, so a “20°F bag” may be comfortable only at warmer temperatures. Check the comfort rating.

Why Ratings Vary for Individuals

Ratings assume a standard sleeper wearing a base layer on a pad with a certain insulation value. Real comfort depends on:

• Metabolism and whether you sleep warm or cold
• What you eat and drink before bed
• Clothing you sleep in
• Your sleeping pad. See our sleeping pad buying guide.
• Shelter, wind and humidity
• Fatigue

Choosing a Temperature Rating

• Look at the expected nighttime lows where you camp, including elevation effects.
• Choose a bag with a comfort rating at or below those lows if you sleep cold.
• For car camping, you can bring extra blankets or a second bag.

Rough Categories

Category	Typical Limit Rating
Summer	About 35°F and above
Three-season	About 10°F to 35°F
Winter	Below about 10°F

These categories are approximate and vary by brand.

Down vs. Synthetic Insulation

Down

• Pros: Excellent warmth for its weight, compresses well, durable with care
• Cons: Loses insulation when wet unless treated, more expensive

Fill power measures down loft. Higher fill power means more loft per ounce. Some down is treated for water resistance.

Look for certifications like the Responsible Down Standard (RDS) if animal welfare matters to you.

Synthetic

• Pros: Retains more insulation when damp, often less expensive, easy to care for
• Cons: Heavier and bulkier for the same warmth

For car camping, weight matters less, so synthetic bags can be a practical choice.

Bag Shapes

• Mummy bags: Tapered for warmth and efficiency. Less room to move.
• Rectangular bags: Roomy and comfortable, often unzip into blankets. Less thermally efficient.
• Semi-rectangular: A compromise.
• Double bags: Designed for couples.
• Quilts: Open-backed designs that rely on the pad underneath.

Features to Consider

• Hood: Adds warmth for your head.
• Draft collar and zipper draft tube: Reduce heat loss.
• Zipper quality: Snag-free zippers are less frustrating.
• Length: Choose a length that fits your height.

Tips to Sleep Warmer

• Use an insulated pad. The ground steals heat.
• Wear dry base layers to bed, not the clothes you wore all day.
• Wear a warm hat.
• Eat a snack before bed.
• Stay hydrated, but empty your bladder before sleeping.
• Use a liner to add warmth.
• Fill a water bottle with hot water, seal it well and place it in the bag. Make sure the bottle is designed for hot liquids.
• Add a blanket over your bag when car camping.
• Avoid breathing into your bag, which adds moisture.

Caring for Your Sleeping Bag

• Store loosely in a large storage sack, not compressed.
• Air it out after each trip.
• Wash sparingly following manufacturer instructions, using appropriate cleaners for down or synthetic fill.
• Use a liner to keep the bag cleaner.

Pairing With Shelter

A good tent keeps wind and rain off your sleep system. See best 4-person tents and how to pitch a tent in the rain.

Understanding Bag Labels

A typical label may show a comfort rating, a limit rating and sometimes an extreme rating, along with the test standard used. When comparing bags, make sure both use the same standard, since non-standardized ratings from different manufacturers may not be directly comparable. If a bag does not list a standard, treat its temperature rating with caution.

Sleeping Bags for Kids

Children may need bags sized for their height, since extra space in an adult bag can be harder to warm. Check that kids’ bags are rated for the temperatures you expect, and pair them with a pad. Bring an extra blanket and dry pajamas, since kids often get damp or cold during the day.

Layering Your Sleep System

For car camping, you can build a flexible system from several pieces: a sleeping bag, a liner, a blanket and a warm pad. On warm nights, unzip the bag and use it as a quilt. On cold nights, add the liner and a blanket. This approach lets you camp comfortably across seasons without buying several bags.

Questions to Ask Before Buying

• What are the typical nighttime lows on your trips?
• Do you sleep warm or cold?
• Do you prefer a roomy rectangular bag or a snug mummy bag?
• Will you also use the bag for backpacking?

Down Care Tips

If you choose a down bag, keep it dry with a waterproof stuff sack, air it out each morning when conditions allow and wash it only when needed using a cleaner designed for down. Dry it slowly on low heat with clean dryer balls to help restore loft, following the manufacturer’s instructions.

Frequently Asked Questions

What does a 20-degree sleeping bag mean?

Often that the bag’s limit rating is about 20°F. Check the comfort rating for a better sense of real-world warmth.

Should I choose comfort or limit rating?

If you sleep cold, use the comfort rating. Warm sleepers may find the limit rating closer to their experience.

Is down or synthetic better for car camping?

Both work. Synthetic is often less expensive and handles dampness better, while down is lighter and more compressible.

Why am I cold in a warm sleeping bag?

Your pad may not insulate enough, or you may need dry layers or a hat.

How should I store a sleeping bag?

Loosely in a large, breathable storage sack.

The Bottom Line

Sleeping bag temperature ratings help you compare bags, but they are estimates. Look at comfort ratings, consider whether you sleep warm or cold, and pair your bag with an insulated pad. Choose down or synthetic based on budget and conditions, and use simple tricks to sleep warmer.

---

Editorial note: Camp Craftly is independent and reader-supported. This guide is based on research into manufacturer documentation, published specifications and widely accepted best practices; we have not been paid to mention any product. If we add affiliate links in the future, they will be clearly disclosed per our Affiliate Disclosure.

A sleeping pad does two jobs: it cushions you from the hard ground and insulates you from the cold earth. Many campers focus on sleeping bags and overlook pads, but a cold, uncomfortable night is often a pad problem.

This guide explains how to choose a sleeping pad for car camping and beyond, including R-value, pad types and sizing.

Why Sleeping Pads Matter

The ground pulls heat from your body through conduction. Your sleeping bag insulation gets compressed under you, so it provides little warmth underneath. A pad provides that insulation. Without enough insulation, you may feel cold even in a warm sleeping bag.

Understanding R-Value

R-value measures a pad’s resistance to heat flow. A higher R-value means more insulation.

In 2020, the industry adopted the ASTM F3340 standard for testing sleeping pad R-values, making ratings more comparable across brands that use it.

General R-Value Guidelines

These are rough guidelines, and personal needs vary:

Conditions	Approximate R-Value
Warm summer nights	1 to 2
Three-season camping	2 to 4
Cold conditions	4 to 5+
Winter camping on snow	5 and above

Cold sleepers may want higher values.

Stacking Pads

R-values of stacked pads are roughly additive. Placing a foam pad under an air pad adds insulation and protection from punctures.

Types of Sleeping Pads

Closed-Cell Foam Pads

• Pros: Inexpensive, durable, cannot puncture, lightweight
• Cons: Bulky, less cushioning

Self-Inflating Pads

These contain open-cell foam that expands when the valve is opened.

• Pros: Comfortable, insulated, partially self-inflating
• Cons: Heavier and bulkier than air pads

Air Pads

• Pros: Very comfortable, lightweight, compact
• Cons: Can puncture, can be noisy, need inflation

Camping Mattresses

Thick foam or air mattresses designed for car camping, such as models from Exped, Therm-a-Rest, NEMO and REI Co-op. They prioritize comfort over weight.

Thickness and Comfort

• Thicker pads generally feel more comfortable, especially for side sleepers.
• Car campers can choose thick pads since weight matters less.
• Thickness does not always mean warmth. Check the R-value.

Size and Shape

• Length: Choose a length that fits your height. Short pads save weight but leave feet on the ground.
• Width: Standard pads are often about 20 inches wide. Wide pads (about 25 inches) give more room.
• Shape: Rectangular pads offer more space. Mummy shapes save weight.

Car Camping vs. Backpacking Pads

Factor	Car Camping	Backpacking
Weight	Less important	Very important
Packed size	Moderate	Very important
Thickness	Often thicker	Often thinner
Comfort	Top priority	Balanced with weight

Inflation and Valves

• Many air pads use pump sacks to avoid blowing moisture into the pad.
• Some pads include built-in pumps.
• Electric pumps are convenient for car camping.
• Modern valves often allow fast inflation and deflation.

Noise

Some air pads crinkle when you move. Check reviews if you are a light sleeper.

Durability and Repair

• Carry a repair kit for air and self-inflating pads.
• Use a footprint or foam pad underneath to protect against punctures.
• Keep pads away from sharp objects and pets’ claws.

Storage

Store self-inflating pads unrolled with the valve open to help the foam keep its loft. Store air pads loosely in a dry place.

Pads vs. Air Mattresses and Cots

Air mattresses and cots are also popular for car camping. See camping cots vs. air mattresses. Large air mattresses without insulation can feel cold because air inside cools down.

Pairing Your Pad With Your Sleeping Bag

Your sleep system works as a whole. Match your pad’s R-value to your sleeping bag’s rating and expected temperatures. See sleeping bag temperature ratings.

Testing Your Pad at Home

Before your trip, inflate your pad and sleep on it for a night at home. This helps you check comfort, confirm there are no leaks and learn how the valve works. If the pad feels too firm or too soft, practice adjusting the air pressure. Many people find a slightly softer pad more comfortable for side sleeping, as long as their hips do not touch the ground.

Choosing a Pad for Different Sleepers

• Back sleepers may be comfortable on thinner pads.
• Side sleepers often prefer thicker pads that keep hips and shoulders off the ground.
• Stomach sleepers may like flatter pads with even support.
• Restless sleepers may prefer wider pads with less noise.
• Couples can use double-wide pads or couple straps to keep two pads together.

Budget Considerations

Closed-cell foam pads are usually the least expensive option and make a good backup or extra layer. Self-inflating pads and thick car camping mattresses cost more but add comfort. If you are on a tight budget, combining an inexpensive foam pad with a basic air pad can provide good comfort and insulation.

Questions to Ask Before Buying

• What are the coldest temperatures you expect?
• How much space does the pad take in your car?
• Do you need it for backpacking too?
• How easy is it to inflate, deflate and pack?
• What is the warranty and repair policy?

Caring for Valves and Seams

Keep valves clean and closed when packing so dirt does not get inside. Avoid leaving a pad in a hot car for long periods, since heat can stress seams and adhesives. If your pad has a lifetime or limited warranty, keep the receipt, since some manufacturers repair pads rather than replacing them.

Frequently Asked Questions

What R-value do I need for camping?

For three-season car camping, many people use pads around R 2 to 4. Choose higher for cold conditions or if you sleep cold.

Are air pads warm?

Some are, especially those with insulation or reflective layers. Check the R-value.

Can I use two pads together?

Yes. Stacking pads adds insulation and comfort.

Why am I cold even with a warm sleeping bag?

Your pad may not provide enough insulation from the ground.

How do I fix a leak in my air pad?

Find the leak with soapy water or by submerging the pad, then patch it with a repair kit.

The Bottom Line

A sleeping pad provides both comfort and insulation from the ground. Check R-value for warmth, choose a type and thickness that suits your camping style and pick a size that fits you. For car camping, prioritize comfort and pair your pad with an appropriate sleeping bag.

---

Editorial note: Camp Craftly is independent and reader-supported. This guide is based on research into manufacturer documentation, published specifications and widely accepted best practices; we have not been paid to mention any product. If we add affiliate links in the future, they will be clearly disclosed per our Affiliate Disclosure.