The 7 Best Sleeping Bag Liners With Buying Guide

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When hiking or traveling, we frequently face the difficulty of having a sleeping bag that’s either not warm enough or too hot to sleep in. In both cases, a sleeping bag liner could be your savior. A sleeping bag liner not only adds extra warmth to your sleeping bag but also keeps your sleeping bag clean. Besides, in hot and humid weather, you can just ditch the sleeping bag and use a sleeping bag liner instead. Before going any further, let us explain why an accessory like this can make a world of difference in your good night’s sleep while backpacking or camping. 

What is the Point of a Sleeping Bag Liner?

Sleeping bag liner is one of the most underrated accessories, even though it’s pretty convenient and functional in both hot and cold weather. There are several reasons why you should include this lightweight piece of cloth in your kit. 

Even if you’ve chosen the best sleeping bag for yourself, it’s bound to get dirty while you’re traveling or camping in dusty or sandy places. A sleeping bag liner will keep your bag clean, preventing any sand or dirt your body carries from entering inside of your sleeping bag. If the small grains of dirt or sand goes into the insulation, it can damage your sleeping bag. Besides, it’s easy to clean a sleeping bag liner than a sleeping bag. Moreover, using a sleeping bag liner will extend the life span of your sleeping bag. In case your sleeping bag doesn’t give you enough warmth, a bag liner can boost the temperature up a notch. Sometimes the sleeping bag’s inward lining can feel a bit muggy and unpleasant. So when it comes to comfort, the bag liner generally feels nicer against your skin than your sleeping bag that’s made with nylon or polyester.

Types of Bag Liners

Depending on the material, there are different types of sleeping bag liners available. Since you’re going to be sleeping in your sleeping bag liner, you must be comfortable with the material of your bag liner. 

  • Silk

The sleeping bag liner made with silk is the most lightweight, resilient, and feels pretty luxurious against your skin. Along with comfort, silk material provides sufficient insulation, keeping your sleeping bag dry and protected. The silk bag liners are breathable, and it doesn’t wear off even if you frequently wash them. Moreover, it’ll take very little space in your backpack. However, the sleeping bag liner made with silk could be a bit expensive. 

  • Cotton and Polycotton

The sleeping bag made with cotton and polycotton provides more warmth than the silk one. Cotton and polycotton may not be as compressible as silk, but they feel pretty comfy and cozy. Moreover, they are quite affordable and less prone to ripping. As the cotton and polycotton bag liners are durable, you can frequently wash them.

Our Top 7 Picks for the Best Sleeping Bag Liners

With so many options available in the market, it’s pretty easy to get puzzled about which sleeping bag liner you should get. To ease any confusion, here is the list of the seven best sleeping bag liners.

1. Sea to Summit Reactor Insulated Sleeping Bag Liner

If you’re looking for a lightweight sleeping bag liner that will add a significant amount of warmth to your sleeping bag, then the Sea to Summit Reactor Insulated Sleeping Bag Liner is the one for you. 


  • The Sea to Summit Reactor Insulated Sleeping Bag Liner is constructed with Thermolite polyester. This Thermolite fiber provides extra warmth to the liner. So along with a warm, luxurious, and comfortable feel, you get a pretty sturdy liner that does a great job at protecting your sleeping job.
  • The Sea to Summit Reactor Insulated Sleeping Bag Liner is equipped with two weights of Thermolite fabric. The thicker and insulative part covers the torso and the feet area. Moreover, the hollow core fiber can effectively trap the heat inside the bag. 
  • Due to its stretchy knit construction, the Sea to Summit Reactor Insulated Sleeping Bag Liner is less prone to ripping. It doesn’t wear off that easily, and it’s easy to clean as well. 
  • The Sea to Summit Reactor Insulated Sleeping Bag Liner weighs around 8.7oz with a 72 x 36-inch dimension. Thus it’s pretty lightweight and compact than most of the bag liners. Women who are 6 feet under can easily fit into this sleeping bag liner, thanks to its shorter design. 


It is built with Thermolite polyester.
Cozy and comfortable feel.
Less prone to ripping.
Lightweight and compact.
Perfect warmth to weight ratio.
Features a foot box and drawstring hood.


Low-quality seams.

Final Verdict

The Sea to Summit Reactor Insulated Sleeping Bag Liner’s warmth to weight ratio is something that makes it one of the best sleeping bag liners out there. Moreover, it also features a foot box and a locking drawcord hood.

2. Cocoon Silk Mummy Liner

Cocoon is known for manufacturing extremely high-quality camping, backpacking, and travel accessories. That’s why our next pick is the Cocoon Silk MummyLiner. 


  • The Cocoon Silk Mummy Liner is made with high-quality silk. This optimum silk fabric is lightweight, breathable, and feels really nice against your skin. It also responds well in terms of changing temperature. This liner is knitted with a grid-like pattern with Ripstop Silk, that’s more sturdy and tear-resistant than regular silk.
  • Due to the rectangular design, the Cocoon Silk Mummy Liner is pretty spacious. Despite the roominess of this liner, it weighs only 1.12 Ounces. This sleeping bag liner is one of the best options if you’re opting for ultralight backpacking. 
  • The Cocoon Silk Mummy Liner features a built-in pillow pocket so that the pillows don’t slip away while sleeping. Moreover, this liner wicks away any sweat or moisture to make sure you stay dry. It also comes with a velcro fastener that attaches the upper and lower part together. 


Lightweight and portable.
Feels luxurious.
Built in pillow pocket.
Drawstring hood.
Features a velcro fastener.


Lack of warmth.

Final Verdict

If you’re looking for a luxurious silk sleeping bag liner that provides excellent insulation, then you should check out the Cocoon Silk MummyLiner. This sleeping bag liner will feel cool during the hot conditions and provide warmth during the cold condition. With the tear-resistant fabric, this liner is pretty durable as well. And with its compactness, it will take very little space in your backpack.

3. ALPS Mountaineering Mummy Sleeping Bag Liner

If you’re looking for a well-made sleeping bag liner with an affordable price tag, then the ALPS Mountaineering Mummy Sleeping Bag Liner is just the right one for you. It’s one of the cozy liners suitable for mummy-style sleeping bags. 

Product Information

The ALPS Mountaineering Mummy Sleeping Bag Liner is made of high-quality brushed polyester and will keep you toasty all night. The polyester microfiber fabric is also really comfortable and feels pretty nice. Although ALPS does not give a temperature rating, it’s estimated that the Microfiber Mummy adds 5-10°F to your sleeping bag. 

This liner folds open on the right side, unlike the other traditional liners that require crawling in from the top. It’s a lot simpler to get in and out of it. Moreover, you can frequently wash this liner, it won’t wear off that easily. The ALPS Mountaineering Mummy Sleeping Bag Liner comes with a standard stuff sack for better storage.


Excellent value for money
It keeps you warm and cozy
Easier to get in or out.
Easy to clean.
Compact design


Slightly heavier.

Final Verdict

ALPS MicroFiber Mummy has a super-cozy, comfy feel with great warming ability. At this price, it’s one of the best sleeping bag liners you can find. However, it is a bit narrow in the foot region and slightly heavier than other products in this list. It’s is a pretty basic, frill-free sleeping bag liner that provides great performance and an excellent value for money.

4. TETON Sports Sleeping Bag Liner

The next up is the TETON Sports Sleeping Bag Liner. If you are specifically looking for a liner that can warm up any double sleeping bag, then this one is for you. It also fits most of the sleeping bag pretty well. 

Product Summary

The TETON Sports Sleeping Bag Liner is made with brushed poly-fiber that reduces tangling and twisting during your sleep at night. This liner adds a 10-degree Fahrenheit of warmth to your sleeping bag. Moreover, it’s pretty spacious with a dimension of 91 x 58 x 0.25 inches. 

The TETON Sports Sleeping Bag Liner features a pillow hood and a safety velcro tab. When the liner is not in use, the velcro tab ensures the sleeping bag liner doesn’t unfold itself. Moreover, this liner is multipurpose as it can be used as a travel sheet as well. 

When it comes to cleaning, you can use a machine, and it also dries out quickly. The TETON Sports Sleeping Bag Liner comes with other accessories like a stuff sack with drawstring, barrel-lock, and handle. Hence, you can easily carry this sleeping bag liner and store them properly. Due to its reinforced seams, the lines don’t tear that easily.


Provide excellent warmth to your sleeping bag.
Features a pillow hood.
Features a safety velcro.
Easy to clean.
Comes with a stuff sack.


Slightly heavy.

Final Verdict

All in all, the TETON Sports Sleeping Bag Liner will be an excellent choice if you want a roomier, comfortable sleeping bag liner with great warming ability. And this comes with additional useful features as well. 

5. Sea to Summit Coolmax Insect Sheild Sleeping Bag Liner

If you’re backpacking or camping in an area where the bugs are an issue, then this Sea to Summit Coolmax Insect Sheild Sleeping Bag Liner would be a useful option for you. 

Product Information

This Sea-to Summit Insect Sheild Sleeping Bag Liner is one of the stretchy and comfortable liners. Moreover, the Coolmax fabric is very breathable and can keep any sweat or moisture away, so you can be as dry and comfy as possible. And due to its stretchy fabric, you can easily turn without getting tangled in the liner. This Sea-to Summit Insect Sheild Sleeping Bag Liner can add great warmth to your sleeping bag when you’re backpacking, especially on chilly nights. However, you can ditch your sleeping bag during humid conditions and use only the sleeping bag liner itself. 

Thanks to the Insect Shield permethrin treatment, you can peacefully sleep in your sleeping bag liner without the interruption of any bugs or mosquitoes. This insect-repellent treatment is pretty durable.


Durable insect repellent protection.
Wicks moisture.
Stretchy and breathable.
Feels warm and cozy.
Includes a stuff sack for storage.
Keeps your sleeping bag clean.



Final Verdict

As we all know, Sea-to Summit is a brand widely known for making top-notch travel accessories; hence, their Sea-to Summit Insect Sheild Sleeping Bag Liner is no different from that. With an additional feature like insect protection, this Sea-to Summit Insect Sheild boast all the attribute of a high-quality sleeping bag liner. 

6. Big Agnes Sleeping Bag Liners

If you’re someone who doesn’t mind carrying some weight while backpacking, then the Big Agnes Sleeping Bag Liners is the one for you. Even though it’s a bit heavy, it offers greater longevity and superior performance. 


  • The Big Agnes Sleeping Bag Liners is made with Polartec recycled fleece, and to add extra durability, it comes with reinforced seams. With this fabric, you’re bound to have a luxurious and cozy sleeping system while backpacking or traveling. 
  • The Big Agnes Sleeping Bag Liners are best for the chilly night as they add 5 – 10 F of warmth to your sleeping bag. This liner is suitable for frequent usage, and you can also clean it pretty easily. 
  • This sleeping bag liner features a side opening. If you want your liner to retain most heat, you can close the side opening. And if you want more ventilation, you can keep the side open. Furthermore, it’s pretty easy to attach this liner with your sleeping bag, thanks to the hooks that are located on the head and the foot.


It is constructed with recycled fleece.
Luxurious feel.
Provides great warmth.
Durable and can withstand frequent use.
Easy to attach to the sleeping bag.


Slightly narrow and heavy.

Final Verdict

If warmth, comfort, and durability are what you need, then the Big Agnes Sleeping Bag Liners are perfect for you. However, with all these benefits, you may have to deal with the heaviness of this sleeping bag liner. 

7. Cocoon Coolmax Sleeping Bag Liner

The Cocoon Coolmax Sleeping Bag Liner is quite similar to the Sea to Summit Coolmax Insect Sheild mentioned above. The fabric used in both of the sleeping bag liners is pretty comparable. However, the Cocoon Coolmax Sleeping Bag Liner is more on the affordable side. 

Product Information

If you want to stay warm, cozy, and dry in your sleeping bag, you need a liner that’s breathable and wicks away any moisture. That’s exactly what you can expect from the Cocoon Coolmax Sleeping Bag Liner. 

This sleeping bag liner is made with Polyester CoolMax, which is one of the fastest drying fabrics. Besides, its four-channel fiber wicks away any moisture or sweat from your body. This sleeping bag cleaner is pretty easy to clean as well. Moreover, it provides a greater degree of warmth to your sleeping system.


Built with Polyester CoolMax fabric.
Wicks away moisture
Warm and cozy feel.
Easy to clean.


Doesn’t include a side opening.

Final Verdict

If you want an affordable alternative option for Sea to Summit Coolmax Insect Sheild, then the Cocoon Coolmax Sleeping Bag Liner is the one for you. However, this sleeping bag liner doesn’t include a side opening or a zipper.

Buying Guide: How to Select the Best Sleeping Bag Liners?

There are several things you should consider before buying a sleeping bag liner. Thus, let’s check out the must-have features a solid sleeping bag liner should have. 

Liner Shape and Fit

A sleeping bag liner comes in different sizes and shapes. Thus make sure to get a sleeping bag liner that suits your need. There are standard liners that come with more room for your feet. So the roomier design of this rectangular liner is best for restless sleepers. Then there is a mummy-style sleeping bag liner that’s narrow on the feet and wider on the shoulder. It provides much more warmth than the rectangular bag liner. Finally, there’s a long bag liner for taller people, which is basically a rectangular bag liner with a few extra inches. Moreover, people with claustrophobic behavior should go with the double-width sleeping bag liner. 


While backpacking or traveling, you want to pack as light as possible. Thereby, you have to make sure the sleeping bag liner you’re carrying is both lightweight and easily portable. You can opt for the silk sleeping bag liner. They are lightweight and will take up very little space in your backpack. However, if you’re going for an extremely light liner, you might have to compromise with warmth and comfort. 


While buying a sleeping bag liner, make sure it’s made with durable material. As the durability of the liner depends on the material. A sleeping bag liner is something that you need to wash frequently, so if your liner is not made with sturdy material, it can tear or rip off pretty easily. Material like polyester, silk, or cotton would be a good choice. These materials don’t wear off that easily.

Temperature Rating

One of the main reasons people opt for a sleeping bag liner is to add more warmth to their sleeping bags. That being said, a temperature rating of a sleeping bag liner refers to the fact of how much heat it can retain inside the sleeping bag. The temperature rating of a liner also depends on its thickness.

Frequently Asked Questions

Q. How do you waterproof a sleeping bag liner?

Generally, sleeping bag liners are not waterproof. However, you can use a waterproof spray on your sleeping bag liner after washing it. Once you’re done spraying, let it dry before packing it or using it. 

Q. How to wash a sleeping bag liner?

Most sleeping bag liners can be washed in the machine with normal detergent. However, make sure you don’t use any fabric softener while washing. And it’s recommended to air dry your bag liner after washing.

Q. How much temperature does a sleeping bag liner add?

Different varieties of sleeping bag liners provide differing degrees of warmth. Depending on the liner material, a bag liner may add from 5° to 15°F to the warmth of your sleeping bag. 

Q. Why is a cotton sleeping bag liner not suitable for backpacking?

While backpacking, sleeping bag liners made with cotton is not ideal because they retain too much moisture and take longer to dry. Besides, cotton is a bit heavier than materials like silk. 

Q. Is a fleece sleeping bag liner good for backpacking?

If your sleeping bag doesn’t give you enough warmth, a fleece sleeping bag liner is good for backpacking. Because a fleece liner is primarily used for increasing the temperature inside your sleeping bag.

Q. Is a silk sleeping bag liner worth it?

If comfort, insulation, and compactibility are what you need, a silk sleeping bag liner is the right choice. A silk sleeping bag liner feels luxurious and can wick away moisture pretty easily. Besides, it’s super lightweight, making it the best accessory to carry while backpacking.

So, grab a liner if you want to make sure your trips are as comfortable as possible, and your sleeping bag gets a prolonged life span. A solid liner will keep your sleeping bag fresh, clean, a few degrees warmer, and free of insect or bacterial invaders while you’re sleeping. We hope you can pick a sleeping bag liner from the list we have mentioned above. With a good sleeping bag liner in your side, you’ll never have to worry about how you’re going to sleep again while traveling.

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