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🔥 Elevate your sleep game — stay warmer, lighter, and greener on every trek!
The Sea to Summit Reactor Extreme insulated sleeping bag liner uses advanced Thermolite Pro fabric with infrared technology to boost warmth by up to 25°F. Made from 50% recycled materials, it offers eco-friendly insulation without sacrificing performance. Designed in a technical mummy shape with a drawstring hood, it fits snugly inside your sleeping bag or can be used alone in warmer conditions. Lightweight at 386g and easily packable, it’s ideal for backpackers and winter campers seeking versatile, sustainable warmth.
| ASIN | B0CT67SDHF |
| Age Range Description | Adult |
| Best Sellers Rank | 79,433 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 70 in Sleeping Bag Liners |
| Brand Name | Sea to Summit |
| Closure Type | Drawstring |
| Colour | Dark Blue or Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (695) |
| EU Spare Part Availability Duration | 7 Years |
| Fabric Type | thermolite |
| Fill Material Type | Thermolite |
| Global Trade Identification Number | 09327868158355 |
| Item Dimensions L x W | 198L centimetres |
| Item Length | 78 Inches |
| Item Shape | Mummy |
| Item Weight | 417 g |
| Manufacturer | Sea to Summit |
| Manufacturer Part Number | ASL031031-191902 |
| Material | Polyester |
| Maximum Height Recommendation | 85 Inches |
| Model Number | ASL031031-191902 |
| Occupancy | 1pc |
| Outer Material Type | Polyester |
| Seasons | 3 Seasons |
| Size | Compact |
| Special Features | Thermal Booster, HeiQ Fresh Odor Control, Stand Up Box with Drawstring |
| Sport Type | Camping & Hiking, Backpacking, Hiking |
| Temperature Rating | 32F and above |
| Thermal Resistance | 32 |
| Unit Count | 1.0 count |
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.
M**E
Well worth the money
Fantastic, far superior to the others I have tried
J**E
So warm and so perfect.
Because my house is awaiting insulating, I sleep in mine daily and its so warm and perfect. Breathes well too.
A**I
Way too overpriced!!!!
Much greater alternative to other sleeping bag liners which actually working and make a difference on temperature ratings...also pretty comfortable and nice feeling. Although is a good product after trying many other cheaper products I founded that is way to overpriced comparing with many other which performed as well
I**N
Great
Great item, thank you.
P**N
A must buy for cold sleepers with mediocal sleeping bag
So nice... really makes a difference! Anytime again
A**A
Used it with a 3 season sleeping bag in -8 Celsius.
It worked very well. I had a 3 season sleeping bag and this liner. Temps dropped to -8 Celsius in the mountains but I slept very well indeed.
H**O
So comfy
Really nice quality, kept me warm when camping in Scotland.
ま**♪
シュラフのインナーとして使ってますが、かなり暖かいというか暑いくらい 買って良かった♪
C**6
j'étais septique et pourtant... efficace et bien chaud combiné avec un duvet en polyester conforme à mes attentes et livré dans les temps, je recommande ce produit
M**N
Ich habe den Reactor gekauft, um meinen Schlafsack in gelegentlich kälteren Nächten damit zu ergänzen. Das kommt mal vor, wenn man zum Beispiel aus dem Süden über die Alpen nach Hause unterwegs ist und das Lager irgendwo in den Bergen aufstellen muss. Mein Sommer-Schlafsack hält mich warm bis etwas 12 Grad. Darunter fühle ich die Kälte deutlich. Zusammen mit dem Reactor aber habe ich bereits 8 Grad kalte Nächte konfortabel durchgeschlafen. Das Ding ist auch allein in warmen Nächten als Schlafsack recht nützlich, wenn man in den weiter südlich wärmeren Klimen unterwegs ist, zum Beispiel in Griechenland oder Süd-Spanien.
A**R
Camping d’automne Je m’attendais à ce que cela soit plus épais… Par contre je me suis sentie bien au chaud quand même.
N**G
Very warm and compact great for backpacking just wish it was a bit more stretchy
Trustpilot
1 month ago
2 months ago