Do you ever wonder how you can make your sleeping bag warmer? A sleeping bag liner is your solution. These liners are similar to the sheets used in your bed, in that they provide a level of protection and warmth. They also help keep your bag cleaner for longer. But do you know what’s the best sleeping bag liner for you?
One of our big goals here at The Adventure Junkies is to make your life easier when it comes to choosing outdoor gear. In this article, we’ll walk you through what you need to consider when it comes to choosing a sleeping bag liner and show you our selection of the best models of the year.
For more of our top backpacking gear recommendations, check out the Best Backpacking Sleeping Bags.
Quick Answer - The Best Sleeping Bag Liners
- Sea to Summit Thermolite Reactor
- ALPS Mountaineering Mummy
- The Friendly Swede
- Sea to Summit Premium Silk
- TETON Mammoth Sports
- Sea to Summit Reactor Extreme
- Sea to Summit Coolmax
- Bundle Monster Microfiber Fleece
Comparison Table - Best Sleeping Bag Liner
For the best experience turn your device horizontallyName | Length | Width | Material | Weight | Price | Rating | Review |
---|---|---|---|---|---|---|---|
Sea to Summit Thermolite Reactor | 87.7 in | 35.4 in | Polyester | 8.1 oz. | $$$ | 4.8 | Read Review |
ALPS Mountaineering Mummy | 86 in | 32 in | MicroFiber | 11.0 oz | $$ | 3.8 | Read Review |
The Friendly Swede | 86 in | 41 in | Polyester | 6.4 oz | $ | 4.6 | Read Review |
Sea to Summit Premium Silk | 73 in | 36 in | Silk | 6.1 oz | $$$$ | 4.4 | Read Review |
TETON Mammoth Sports | 91 in | 58 in | Cotton | 18.4 oz | $$$ | 3.9 | Read Review |
Sea to Summit Reactor Extreme | 84 in | 36 in | Thermolite | 14.0 oz | $$$$ | 4.2 | Read Review |
Sea to Summit Coolmax | 84 in | 36 in | Coolmax | 8.6 oz | $$$ | 4.4 | Read Review |
Bundle Monster Microfiber Fleece | 69 in | 29 in | Microfiber fleece | 22.4 oz | $$ | 4.4 | Read Review |
Name | Length | Width | Material | Weight | Price | Rating | Review |
Reviews - The Best Liners for Sleeping Bags
Sea to Summit Thermolite Reactor
Specs
- Material: Polyester
- Length: 87.7 in
- Weight: 8.1 oz.
- Width: 35.4 in
Features
- Hollow-core fiber insulation
- Adds up to 14°F of warmth to a sleeping bag
- Very light and compact
BEST LINER OVERALL
PROS: Can serve as a sleeping bag entirely on its own during summer months or in warm temperatures
CONS: Expensive
ALPS Mountaineering Mummy
Specs
- Material: MicroFiber
- Length: 86 in
- Weight: 11.0 oz
- Width: 32 in
Features
- Mummy shape
- Easy to clean
- Stuff sack included
BEST FOR: BACKPACKERS ON A BUDGET
PROS: Mummy shape for tight fit, protects against dirt
CONS: Not comfortable for restless sleepers, heavier than other liners
The Friendly Swede
Specs
- Material: Polyester
- Length: 86 in
- Weight: 6.4 oz
- Width: 41 in
Features
- Includes pillow pocket
- Silk texture
- Side opening
- Velcro or zipper closure
BEST FOR: TRAVELERS ON A BUDGET
PROS: Has extra space, velcro makes getting in easy
CONS: Synthetic fiber isn’t as comfortable as silk
Specs
- Material: Silk
- Length: 73 in
- Weight: 6.1 oz
- Width: 36 in
Features
- Machine washable
- Comfortable blend of silk and cotton
- Double folded seams
- Included stuff sack
BEST FOR: LUXURY TRAVELERS
PROS: Compact, breathable, high quality, comfortable
CONS: Expensive compared to other liners
TETON Mammoth Sports
Specs
- Material: Cotton
- Length: 91 in
- Weight: 18.4 oz
- Width: 58 in
Features
- Machine washable
- Versatile for camping or traveling
- Split sides for easy entry/exit
BEST FOR: TALLER BACKPACKERS
PROS: Adds 10 degrees F of warmth, extra long and wide
CONS: Takes up large amount of space when folded
Sea to Summit Reactor Extreme
Specs
- Material: Thermolite
- Length: 84 in
- Weight: 14.0 oz
- Width: 36 in
Features
- Synthetic
- Mummy shape with foot box
- Includes stuff sack
BEST FOR: BACKPACKERS NEEDING A LIGHTWEIGHT LINER
PROS: Provides up to 25 degrees F of warmth, breathable
CONS: Not versatile – too warm for summer camping
Sea to Summit Coolmax
Specs
- Material: Coolmax
- Length: 84 in
- Weight: 8.6 oz
- Width: 36 in
Features
- CoolMax polyester provides for moisture wicking
- Pillow insert
- Included stuff sack
BEST FOR: HUMID AND BUGGY CLIMATES
PROS: Repels insects, odorless insect protection, durable material
CONS: Not suitable for cold weather
Bundle Monster Microfiber Fleece
Specs
- Material: Microfiber fleece
- Length: 69 in
- Weight: 22.4 oz
- Width: 29 in
Features
- Versatile for camping or traveling
- Zippered closure
BEST FOR: COLD CLIMATES
PROS: Hypoallergenic material, provides added warmth
CONS: Too warm for summer weather
HOW TO CHOOSE THE BEST SLEEPING BAG LINERS
CLIMATE YOU’LL BE BACKPACKING IN
Sleeping bag liners come in a few different types of materials. You’ll need to think about what climate you plan to camp in to choose the best one for you.
Silk liners are lightweight, which great for summer conditions but not if you’re looking for added warmth.
Fleece liners are the best for adding warmth to your bag in cold climates. An insulated liner can raise the temperature inside the bag by up to 25 degrees F.
FIT
Sleeping bag liners come in several different shapes. Some are specifically designed to accommodate those who aren’t of average height. They are shorter or longer than usual to make sure the liner can fit properly in the length and width of their sleeping bag. These are all considerations to keep in mind when choosing the right sleeping bag liner for you.
A mummy liner will keep you extra warm because it forms to the shape of your body, trapping heat. The disadvantage of this fit is it can be constricting. If you tend to move a lot in your sleep you’ll want to consider a rectangular shape instead.
MATERIAL OF LINER
Some materials are lighter in weight, such as silk and synthetic. An advantage of this is they’ll take up less space in your backpack since they’re more compact. They also tend to be more breathable, which is ideal in hotter weather.
Heavier materials such as fleece and insulated liners will take up more space and weigh more overall. The advantage of this type of liner is they are warm. Some of them are also quick-drying and moisture-wicking so you won’t have a soggy bag the next evening.
COMPRESSIBILITY
If your backpack is packed to the brim with equipment, you won’t want a heavy liner. Since the thick material provides extra protection against the cold, they tend to take up a good amount of space, even when folded. A lightweight liner will fold up much smaller to fit in your pack without having to rearrange everything.
ADVANCED FEATURES
BUG-REPELLANT LINERS
If you’re going to a warm, humid climate full of mosquitos or other insects, consider buying a liner specifically to repel bugs. They’re made with an odorless insect shield repellent to keep bugs at bay.
PILLOW CASE LINERS
Some sleeping bag liners extend to include a liner for the pillow as well. These protect your pillow from dirt so you have to clean it less. They’re ideal for trips where you won’t be able to shower for extended periods of time.
READ MORE
For more of our top hiking & backpacking gear recommendations, check out these popular buyer's guides:
Best Backpacking Sleeping Bags
Best Backpacking Sleeping Pads