Reactor Extreme Mummy + Drawcord Sleeping Bag Liner
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Why We Like The Sea to Summit Reactor Extreme Mummy Drawcord Sleeping Bag Liner
Boost the versatility of your trusty sleeping bag with the added warmth of the Sea to Summit Reactor Extreme Mummy Drawcord Sleeping Bag Liner. This trusty liner relies on a soft, moisture wicking polyester fabric to trap additional body heat without constriction.
Details
- Sleeping bag liner designed for added heat and comfort
- EcoMade polyester wicks moisture and traps heat
- HeiQ treatment fights off odors for full seasons of sleeping
- Drawcord footbox allows you to ventilate or walk around camp
- Compatible with the majority of sleeping bags on the market
- Item #STSZ0A3
- Material
- EcoMade polyester, Thermolite Pro tech, HeiQ Fresh odor-control tech
- Shape
- mummy
- Stuff Sack
- included
- Stuff Size
- 5.9 x 3 x 4.7in
- Dimensions
- [compact] 78in x 21.6 - 31.5in, [standard] 85 x 21.6 - 31.5in
- Claimed Weight
- [compact] 12.6oz, [standard] 12.8oz
- Activity
- camping
- Manufacturer Warranty
- lifetime
Reviews
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What do you think about this product?
Overall Rating
5 based on 18 ratings
Review Summary
Customer Images
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Selecting an option will reload the available reviews on the pageJuly 6, 2025
Great Sleeping Bag Liner
[This review was collected as part of a promotion.] Used the bag liner for a week camping. Worked great. Definitely recommend your Sleeping Bag Liners. Very roomy.
Originally reviewed on Sea to Summit
May 22, 2025
Worked great
[This review was collected as part of a promotion.] I have a down quilt was getting cold drafts coming in and disrupting my sleep. I actually put the quilt inside the liner and I was super warm
Originally reviewed on Sea to Summit
March 9, 2025
Excellent liner
[This review was collected as part of a promotion.] The mummy shape is very comfortable, and the materials feel high-quality.
Originally reviewed on Sea to Summit
October 29, 2024
When temps get low, this
[This review was collected as part of a promotion.] When temps get low, this liner is great to take the edge off of the cold air. Comfortable fabric. I am pleased with the results. Partner to a zero degree bag, it is exactly what I was looking for
Originally reviewed on Sea to Summit
October 11, 2024
Perfect Liner!
[This review was collected as part of a promotion.] This liner is always with me, if I am not using to stay extra toasty in my bag, I use it as a pad sheet for sleeping on during the hot desert nights. Absolute must have for any serious outdoors person
Originally reviewed on Sea to Summit
October 1, 2024
reactor extreme really warms up the sleeping bag.
[This review was collected as part of a promotion.] Just went on a 3 days camping trip using my traverse IIv -4 sleeping bag and this liner inside. I am always cold, but this liner really warmed up the bag and made it toasty. Waking up to -3 celsius in the morning, I didn't want to get up because it was so nice inside my bag, liner and tent. For me, I will get down booties though as my feet are never warm. Highly recommended and it is light and packs small.
Originally reviewed on Sea to Summit
August 17, 2024
The perfect addition to my gear!
[This review was collected as part of a promotion.] Light weight and amazing warmth. I ordered this to add the additional warmth and my bag and it has exceeded my expectations!
Originally reviewed on Sea to Summit
August 11, 2024
Enhance your sleeping system
[This review was collected as part of a promotion.] Reactor sleeping bag liners are a must have, not only to protect the sleeping bag but to give added comfort and warmth. The reactor extreme really delivers and its design features, with the arm holes and base draw cord, make it functionally versatile and adaptable over a range of temperatures.
Originally reviewed on Sea to Summit
July 26, 2024
Toasty and feet accessible
[This review was collected as part of a promotion.] Staying toasty on cold nights is critical for a good night sleep for me. The opening at the bottom allows me to have my feet out and still benefit from the extra warmth.
Originally reviewed on Sea to Summit
June 16, 2024
Perfect for “backcountry” campers!!
[This review was collected as part of a promotion.] The insulation on this is top tier, this will definitely work when we go camping “off season”. It packs back up easily, and doesn’t take up a lot of room. It’s soft, and large enough to fit my brother in law who is 6’3 comfortably.
Originally reviewed on influenster.com
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