--- product_id: 639990533 title: "Reactor - Insulated Sleeping Bag Liner" brand: "sea to summit" price: "NT$8828" currency: TWD in_stock: true reviews_count: 6 url: https://www.desertcart.tw/products/639990533-reactor-insulated-sleeping-bag-liner store_origin: TW region: Taiwan --- # Compact & lightweight 0.38kg Up to +25°F warmth boost 50% eco-friendly recycled fabric Reactor - Insulated Sleeping Bag Liner **Brand:** sea to summit **Price:** NT$8828 **Availability:** ✅ In Stock ## Summary > 🔥 Sleep warmer, camp smarter—upgrade your adventure game! ## Quick Answers - **What is this?** Reactor - Insulated Sleeping Bag Liner by sea to summit - **How much does it cost?** NT$8828 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/639990533-reactor-insulated-sleeping-bag-liner) ## 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 - • **Snug, Technical Fit:** Mummy shape with drawstring hood ensures a cozy, secure fit that adapts to your sleeping bag. - • **Easy Care & Packable:** Machine washable with no special detergent needed, stuffs down small in its Ultra-Sil sack for minimalist travel. - • **Sustainable Performance:** Crafted with 50% Thermolite EcoMade from 100% textile waste—camp green without sacrificing comfort. - • **Thermal Boost Technology:** Infrared-reflective Thermolite Pro fabric adds up to 25°F warmth—extend your camping season effortlessly. - • **Versatile Winter Essential:** Perfect for backpacking and winter camping—use as a standalone liner or to upgrade your existing bag’s insulation. ## Overview The Sea to Summit Reactor Insulated Sleeping Bag Liner uses advanced Thermolite Pro fabric with infrared technology to boost your sleeping bag’s warmth by up to 25°F. Made sustainably with 50% recycled Thermolite EcoMade fibers, it offers a lightweight, compact, and machine-washable solution for year-round camping comfort. Designed in a technical mummy shape with a drawstring hood, it fits snugly inside your sleeping bag or can be used solo in milder conditions, making it a must-have for millennial adventurers seeking eco-conscious, high-performance gear. ## Description Sea to Summit Reactor series insulated sleeping bag liners can extend the comfort range and improve the personal hygiene of any sleeping bag. Thermolite hollow core fibers are constructed like the hair of a polar bear, effectively trapping heat and providing a luxuriously soft and comfortable feel. The stretch knit fabric provides optimal comfort and ensures that the Reactor fits into any sleeping bag. Plus, the drawstring box offers plenty of ventilation and the versatility of walking around the camp while wearing your liner. Available in three different weights, Reactor technical liners make your existing sleeping bag warmer and more versatile. Regular liner uses hollow-core Thermolite Pro fabric with infrared absorbing ceramic pigments and Thermolite EcoMade fibers. This lightweight fabric adds up to 14 F of warmth to your sleep system. The Extreme Liner features a thicker hollow-core Thermolite Pro fabric to add up to 25 F of warmth to your sleep system. The fleece employs hollow-core Thermolite Pro fibers in a grid pattern to deliver our warmest sleeping bag liner that adds up to 32 F of warmth to your sleep system. ## Features - THERMAL BOOST: The Reactor Extreme mummy sleeping bag liner, made with Thermolite Pro fabric, uses infrared technology to reflect body heat, enhancing warmth for a 1-season sleeping bag and increasing insulation for a 3-season bag. - SUSTAINABLE MATERIALS: Constructed with 50% Thermolite EcoMade All-Season fabric, made from 100% textile waste and GRS Certified, and 50% Thermolite Pro, this single sleeping bag liner offers eco-friendly insulation without compromising performance. - EASY CARE & PORTABLE: The technical mummy shape with a drawstring hood ensures a snug fit. Machine washable with no special soap needed, it packs compactly into its own Ultra-Sil stuff sack. Length: 216cm. Width: Shoulders 80cm, Feet 55cm. - BEST FOR WINTER CAMPING: Ideal for backpacking and winter camping, this portable sleeping bag liner is perfect for extending the warmth and performance of your sleeping bag in cold conditions or as a stand-alone sleeping bag in warmer weather. - OUTDOOR GEAR THAT ENABLES FREEDOM: Sea to Summit stands as a testament to the boundless spirit of adventure, blending cutting-edge innovation with a deep commitment to empowering individuals to embrace self-reliance in any environment. ## Technical Specifications | Specification | Value | |---------------|-------| | Age Range Description | Adult | | Asin | B0CT69SWJP | | Best Sellers Rank | 25,582 in Sports & Outdoors (See Top 100 in Sports & Outdoors) 30 in Sleeping Bag Liners | | Brand Name | Sea to Summit | | Closure Type | Drawstring | | Colour | Orange | | Customer Reviews | 4.4 4.4 out of 5 stars (107) 4.4 out of 5 stars | | Fabric Type | thermolite | | Fill Material Type | Thermolite | | Global Trade Identification Number | 09327868158331 | | Item Dimensions L X W | 2.16L metres | | Item Shape | Mummy | | Item Weight | 0.38 Kilograms | | Manufacturer | Sea to Summit | | Manufacturer Part Number | ASL031071-190804 | | Material | Thermolite | | Maximum Height Recommendation | 7.08 Feet | | Model Number | ASL031071-190804 | | Number Of Items | 1 | | Number Of Packs | 1 | | Occupancy | 1pc | | Outer Material Type | thermolite | | Seasons | Multiple Seasons | | Size | Standard | | Special Features | Thermal Boost | | Sport Type | Backpacking, Camping, Hiking | | Temperature Rating | Up to 25F increase in sleeping bag warmth | | Unit Count | 1.0 count | ## Product Details - **Age range (description):** Adult - **Brand:** Sea to Summit - **Colour:** Dark Blue or Black - **Material:** Polyester - **Occupancy:** 1pc - **Seasons:** 3 Seasons - **Shape:** Mummy - **Special feature:** Thermal Booster, HeiQ Fresh Odor Control, Stand Up Box with Drawstring - **Sport:** Camping & Hiking, Backpacking, Hiking - **Temperature rating:** 32F and above ## Images ![Reactor - Insulated Sleeping Bag Liner - Image 1](https://m.media-amazon.com/images/I/51y1ZEIIHRL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Well worth the money *by on Reviewed in the United Kingdom 27 August 2025* Fantastic, far superior to the others I have tried ### ⭐⭐⭐⭐⭐ Klein aber fein *by on Reviewed in Germany 28 April 2026* 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. ### ⭐⭐⭐⭐⭐ Buen Producto *by on Reviewed in Spain 2 October 2025* No lo he utilizado todavía pero cumple con la descripción ## Frequently Bought Together - Sea to Summit Reactor Insulated Sleeping Bag Liner - Sea to Summit Drylite Towel, Lightweight Camping and Travel Towel - Rainleaf Microfiber Towel Perfect Travel & Gym & Camping Towel. Quick Dry - Super Absorbent - Ultra Compact - Lightweight. Suitable for Trip, Beach, Shower, Backpacking, Pool --- ## 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.tw/products/639990533-reactor-insulated-sleeping-bag-liner](https://www.desertcart.tw/products/639990533-reactor-insulated-sleeping-bag-liner) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-08-29*