--- product_id: 762458 title: "Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter" brand: "sea to summit" price: "€ 330.37" currency: EUR in_stock: true reviews_count: 6 url: https://www.desertcart.gr/products/762458-thermolite-reactor-extreme-sleeping-bag-liner-red-90-x-210 store_origin: GR region: Greece --- # Adds 25°F warmth Mummy shape for snug fit Compact 6.5 x 4.5 inches Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter **Brand:** sea to summit **Price:** € 330.37 **Availability:** ✅ In Stock ## Summary > 🌌 Sleep like a star in the great outdoors! ## Quick Answers - **What is this?** Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter by sea to summit - **How much does it cost?** € 330.37 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/762458-thermolite-reactor-extreme-sleeping-bag-liner-red-90-x-210) ## Best For - sea to summit enthusiasts ## Why This Product - Trusted sea to summit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready to Go:** Includes a convenient stuff sack for easy storage and transport, so you can hit the trails without a hitch. - • **Ultimate Warmth:** Experience an additional 25°F of cozy comfort, perfect for those chilly nights under the stars. - • **Versatile Design:** Mummy shape with a drawcord hood ensures a snug fit, making it ideal for all your camping adventures. - • **Hygiene & Comfort:** Keep your sleeping bag fresh and clean while enjoying the soft, stretch-knit Thermolite fabric. - • **Lightweight Luxury:** Weighing in at just 14oz, this liner is your go-to for effortless packing and portability. ## Overview The Sea to Summit Thermolite Reactor Extreme Sleeping Bag Liner is designed to enhance warmth and hygiene in your sleeping bag. Measuring 90 x 210 cm, it features lightweight Thermolite insulation that adds up to 25°F of warmth. The mummy shape with a drawcord hood ensures a snug fit, while the included stuff sack makes it easy to pack and carry. Weighing only 14oz, it's perfect for camping and hiking enthusiasts looking for comfort and convenience. ## Description Sea to Summit Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter ## Features - thermolite - Imported - Insulated sleeping bag liner adds extra warmth and personal hygiene to any sleeping bag - Reactor Extreme features heavier weight Thermolite throughout and adds up to 25F degrees - Thermolite hollow core insulation is lightweight, soft and comfortable with stretch knit construction - Mummy shaped with toe-box, draw cord hood and included stuff sack - Extreme (M) Dimensions 83 x 35-inches; packed size 6.5 x 4.5-inches; weight 14oz ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Sea to Summit | | Color | Red | | Occupancy | 1 | | Shape | Mummy | | Seasons | Evergreen | | Temperature Rating | Extreme | | Age Range (Description) | Adult | | Sport | Camping & Hiking | | Special Feature | Reactor Extreme | | Material | thermolite | | Fill Material | Thermolite | | Product Dimensions | 83"L x 35"W | | Closure Type | Zipper | | Item Weight | 0.88 Pounds | | Outer Material | Nylon | | Fabric Type | thermolite | | Size | 90 x 120 cm cm | | Global Trade Identification Number | 09327868022304 | | Item Package Dimensions L x W x H | 7.87 x 5.43 x 4.09 inches | | Package Weight | 0.41 Kilograms | | Item Dimensions LxWxH | 83 x 35 x 0.4 inches | | Brand Name | Sea to Summit | | Country of Origin | China | | Model Name | Thermolite Reactor Extreme | | Suggested Users | unisex | | Number of Items | 1 | | Manufacturer | Sea to Summit | | Part Number | AREACTOREXT | | Model Year | 2014 | | Style | Extreme (83 X 35) | | Fill Material Type | Thermolite | ## Product Details - **Brand:** Sea to Summit - **Color:** Red - **Occupancy:** 1 - **Shape:** Mummy - **Seasons:** Evergreen - **Temperature Rating:** Extreme - **Age Range (Description):** Adult - **Sport:** Camping & Hiking - **Special Feature:** Reactor Extreme - **Material:** thermolite ## Images ![Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter - Image 1](https://m.media-amazon.com/images/I/71lTNobV6sL.jpg) ![Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter - Image 2](https://m.media-amazon.com/images/I/81K1HPK6MeL.jpg) ![Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter - Image 3](https://m.media-amazon.com/images/I/8160Ljdc0TL.jpg) ![Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter - Image 4](https://m.media-amazon.com/images/I/81FUwt0pDZL.jpg) ![Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter - Image 5](https://m.media-amazon.com/images/I/81hJYZcIRaL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Pleased with the item but… *by A***R on April 23, 2023* Really satisfied with the feel of the material, the durability, and effectiveness of the bag liner. I got the extreme version because I wanted to be able to pair it with my 20° bag and get more range and extend its life. I also planned to use the bag liner as a hot summer night sleeping bag. It’s also much easier to wash than a sleeping bag. So it’s nice to use on trip you might be rolling a little grubby.Turns out my favorites use for it is as a summer bag. It’s very small when packed compared to a sleeping bag and works well to keep you comfortable on a backpacking or bikepacking trip on warm nights. It also works well as a bag protector with added warmth to my -20° winter bag. Allowing you to sleep without base layers if that’s your thing.It does not however extended the range of my 20° bag. So if you’re thinking to buy this to push your 20-30° bag to a 0° then I suggest putting them money towards a proper 0° instead. Sleeping outside in zero degrees is really cold and while this helps a bit, it doesn’t make up for the right gear for the job. ### ⭐⭐⭐⭐⭐ Awesome lightweight blanket *by V***N on February 23, 2025* I bought this for Everest Base Camp trip and I used this every night. Our guiding company gave me a sleeping bag but I felt more comfortable getting into this liner first and then the sleeping bag. This liner definitely added more warmth. I also used it later during our camper van trip in New Zealand on chilly nights. ### ⭐⭐⭐⭐⭐ Warm and comfortable *by D***N on January 18, 2025* Cozy, warm and comfortable. ## Frequently Bought Together - Sea to Summit Thermolite Reactor Extreme Sleeping Bag Liner - Red, 90 x 210 Centimeter - Squeeze Water Filtration System --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/762458-thermolite-reactor-extreme-sleeping-bag-liner-red-90-x-210](https://www.desertcart.gr/products/762458-thermolite-reactor-extreme-sleeping-bag-liner-red-90-x-210) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-07-21*