If you are the kind of person who does not enjoy sleeping without a blanket on top, then using a sleeping bag liner is an excellent way to go about it. Sleeping bag liners are a wonderful addition to your gear if you plan on sleeping outside.

It is pretty common for people who do not have sleeping bag liners to use other pieces of cloth as a blanket when sleeping outdoors.

This can often lead to discomfort because your skin will be in direct contact with the irritating material of the blanket. On the other hand, sleeping bag liners are made from materials that feel very much like silk.

No matter how warm it is outside, you will not feel uncomfortable because of the material.

One of the most important things about owning a sleeping bag is having the right accessories and equipment to match your needs.

From backpacks and tents to sacks, sleeping pad and mats – whatever your needs are, there’s something out there that can help you enjoy your time in nature.

One thing that a lot of people often don’t think about is a sleeping bag liner.

A sleeping bag liner is essentially an extra layer of protection for your sleeping bag that serves the same purpose as putting another blanket on top of your bed covers. 

A mummy sleeping bag liner fits inside one of these sleeping bags. Due to their tapered shape at the bottom, mummy sleeping bags fit more closely than regular sleeping bags, making them more warm in the winter.

It is simply a smaller sleeping bag that you use inside your main sleeping bag. It is sewn together in such a way that there are no loose threads or pieces of fabric, and it should give you a comfortable surface to sleep on.

Types Of Sleeping Bag Liners

What Is A Sleeping Bag Liner? by hikingrange.com

1. Cotton liner

A liner made of 100% cotton is an excellent choice if you are looking for an affordable option. Cotton liners can be easily washed, and won’t hesitate to give off lint onto your sleeping bag.

2. Microfiber liner

These liners are mostly recommended for maximum warmth, but they’re not very breathable. They are slightly more expensive than the average cotton liner, but they’re more durable and offer a bit more comfort.

3. Silk liner

Silk sleeping bag liners is one of the most luxurious materials to have as a sleeping bag liner because it’s affordable and lightweight. It won’t make you feel sweaty or uncomfortable, and it will keep you warm.

4. Bamboo liner

Bamboo is a naturally smooth material that won’t irritate your skin as cotton does. It’s also hypoallergenic and comfortable because it dries up quickly after being washed.

5. Fiberglass liner

This type of liner is very similar to silk, but it’s much more durable and can keep you warm even when the temperature drops.

6. Polyester liner (synthetic fibre)

This type of liner offers an affordable alternative to silk or cotton. It’s also easy to wash and won’t let you feel sweaty inside your sleeping bag.

7. Down-filled liner

A down-filled liner is less durable but more comfortable than other types of liners. They are warm, lightweight, soft to the touch and long-lasting – but they’re a little more expensive than other synthetic materials.

8. Lyocell (Tencel or 'Eucalyptus Fiber) Liner

Lyocell is a type of Tencel that comes from Eucalyptus trees and provides the best warmth to weight ratio of synthetic or natural insulation.Lyocell is the most breathable and softest liner material, next to silk. It offers low warmth retention, so it’s great for summer camping as well.These liners can last up to several years if properly cared for – and they’re very affordable compared to other types of lining.

Reason For Getting A Sleeping Bag Liner

What Is A Sleeping Bag Liner? by hikingrange.com

One of the reasons to purchase a sleeping bag liner is because you do not always want to carry around heavy blankets with you when going camping or hiking.

Laying on top of a blanket also makes it difficult for your body’s heat to warm up all parts of your body, leading to cold weather pockets of air that will cause you discomfort.

A sleeping bag liner is simply an extra sheet that goes over your regular blanket or sleeping bag. It absorbs warmth from the outside in addition to any heat generated by your body.

This makes it feel much warmer compared to using just a blanket such as a woollen bed sheet.

Using a sleeping bag liner also means that you can wash it and reuse it multiple times, making them more economical in the long run than carrying around heavy blankets on your camping trips.

A good sleeping bag liner usually costs between $20 to $30, depending on your pick. If you spend a lot of time outdoors, then this is an investment worth making.

For backpackers , a mummy-shaped bag liner helps keep your sleeping bag free of dirt and body oils

What To Look For When Buying A Sleeping Bag Liner

When buying sleeping bag liners, you have to consider the following:


The best material for sleeping bag liners is silk or silk-like materials. They are better than cotton because they do not let you feel cold and uncomfortable. They are also easy to sleeping bag clean, dry fast and do not leave any lint behind after cleaning them. They also do not accumulate germs or bacteria easily compared to cotton liners.


Make sure the liner you buy is long enough for your body size so that it covers from head to toe and has a little extra to tuck inside your sleeping bag. This will keep them from sliding off during the night and falling on you when you move around.


For people who love hiking, camping or backpacking, weight is an important factor to consider when buying a liner because it can add considerable weight to their backpack. It is best to choose a lightweight sleeping bag liner, such as one made of silk or Tencel.


Most liners are around $20 – $30, depending on where you buy them and what material they are made from. This does not make much difference in your camping experience, so it’s worth spending money on a warm and cozy liner.

Sleeping Bags With Liners Can Be Useful For Several Reasons

What Is A Sleeping Bag Liner? by hikingrange.com
  1. They help keep the extra warmth in, allowing you to sleep in comfort.  
  2. They protect your sleeping bag from moisture, keeping it dry and clean longer.  
  3. They provide comfort and extra warmth on their own.  fleece liners using fleece is a great way to get some extra warmth at a much lower cost.
  4. They can be used as an extra layer of insulation on the outside of a sleeping bag during warmer weather so that you can unzip them down further for more ventilation without letting cold air inside the sleeping bag.
  5. They can be used as a down-alternative to your sleeping bag when it is warmer.
  6. They can double as an emergency blanket for warmth at night, even though they are not designed for this purpose.
  7. They are easy to clean and store away in small places, making them ideal for travel or camping trips where you have limited storage space.
  8. They are often more affordable compared to other liners you can get for a sleeping bag, making them an attractive alternative choice.
  9. They provide comfort and warmth on their own without the need for additional layers of clothing or blankets.  
  10. They can be used in all types of weather conditions, either as an inner liner or on their own.  
  11. They are a good investment for people who spend lots of time outdoors in the colder months.

Basics of Using Sleeping Bag Liner

To use a sleeping bag liner, all you have to do is open up the main zipper of your sleeping bag. Then, fold your liner in half so that the two ends meet – this should give you a clean edge on both sides. From there, put your sleeping bag into it and zip the main zipper up.

Since liners are typically just like any other piece of fabric, they come with their own zippers or buttons to keep you inside.

For best results, it is recommended that you use your sleeping bag liner on top of your sheets and underneath the blanket to provide maximum warmth. However, this only works if you are using a down or synthetic sleeping bag – if you have one made out of silk, then it’s best not to use it with any additional fabric.


Sleeping bag liners are an essential piece of gear that can enhance your camping experience, especially in colder weather conditions.

A sleeping bag liner is a blanket-like piece of fabric that you place inside your sleeping bag to add some warmth and comfort to your sleep or rest.  

There are different liners, the most common being cotton, microfiber, silk, bamboo, polyester (synthetic fibre), down-filled and the relatively new Lyocell (Eucalyptus fiber) liner.

Lyocell is known as the best synthetic material when it comes to warmth to weight ratio. What type of sleeping bag liner you buy will depend entirely on your budget, personal preferences and what activities you plan on doing during your camping trip.