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🔥 Sleep warmer, move freer, stay fresher — your ultimate camp upgrade!
The Sea to Summit Reactor Sleeping Bag Liner Extreme Standard (85 x 31.5) uses advanced Thermolite Pro hollow-core fibers with infrared ceramic pigments to reflect body heat, adding up to 25°F of warmth. Its stretch-knit fabric ensures a perfect fit and freedom of movement, while the adjustable drawcord footbox offers customizable ventilation and mobility. Enhanced with HeiQ Fresh odor control, this mummy-shaped liner is designed for all-season use and backed by a lifetime guarantee, making it an essential upgrade for any serious outdoor enthusiast.
| ASIN | B0CT69SWJP |
| Age Range Description | Adult |
| Best Sellers Rank | #100,900 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #10 in Sleeping Bag Liners |
| Brand | Sea to Summit |
| Brand Name | Sea to Summit |
| Closure Type | Drawstring |
| Colour | Orange |
| Customer Reviews | 4.6 out of 5 stars 357 Reviews |
| Fabric Type | thermolite |
| Fill Material Type | Thermolite |
| Global Trade Identification Number | 09327868158331 |
| Item Shape | Mummy |
| Item Weight | 0.38 Kilograms |
| Manufacturer | Sea to Summit |
| Manufacturer Part Number | ASL031071-190804 |
| Material | thermolite |
| Model Number | ASL031071-190804 |
| Occupancy | 1 |
| Outer Material Type | thermolite |
| Season | All Seasons |
| Seasons | All Seasons |
| Shape | Mummy |
| Size | 85 x 31.5 |
| Temperature Rating | 6 to 15 degrees Celsius |
A**A
Very effective sleeping bag liner, warm and cosy
I used this to increase warmth in my 3 season nemo sleeping bag, it’s lightweight, thin fleece which yiu don’t expect to make much difference. However it’s amazing, excellent, warmed up straight away, it’s soft , cosy against your skin and makes the sleeping inside my sleeping bag a totally cosy , lovely experience. It’s pricey, but worth it.
A**R
Fait d’un matériel assez mince
Camping d’automne Je m’attendais à ce que cela soit plus épais… Par contre je me suis sentie bien au chaud quand même.
J**K
Warm and comfortable.
Kept me pretty warm with my 32F down sleeping bag in 25F weather. My feet got a little cold but wasn’t bad enough to keep me up all night.
A**N
Klein aber fein
Das Ding ist echt warm. Ob als Zusatz in kalten Gebieten oder als Haupt Schlafsack in passenden Temperaturen. Kann man machen 👍 ich finde vor allem die Öffnung unten auch sehr gut, dann kann man doch auch mal bei Kälte raus und verschwendet nicht gleich die ganze Wärme :D die Größe(ist klein) und das Gewicht ist es mir auch Wert es mitzunehmen. Bei richtiger Kälte ist nicht zu spaßen.
S**Y
Happy customer
When hiking I carry a tiny Naturehike summer sleeping bag, it only has a comfort temp of 15 degrees C. I like to carry this liner just incase the temperature drops lower than expected or I just find myself getting chilly. It does seem to work, I can't spread out like a starfish in it but I just sleep on my side instead. It is soft and comfortable. - Also, if it is not cold enough to want to get in it. I put my sleeping pad inside it, it acts like a fitted sheet so the pad is more comfortable on the skin. Which makes this an item I can use all year round.
Trustpilot
5 days ago
2 days ago