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Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Reactor Lightweight Liner Sea To SummitOptimised for minimal weight and maximum warmth, the Reactor Lightweight enhances sleep system performance with advanced Thermolite Pro fabric, which uses infrared absorbing ceramic pigments and hollow core fibres to trap body heat. Adding up to 4C 7F of warmth with minimal bulk, its ideal for ultralight expeditions. Stretch knit fabric and articulated arm openings ensure unrestricted mobility. Treated with HeiQ Fresh odour control, its quick drying,
Optimised for minimal weight and maximum warmth, the Reactor Lightweight enhances sleep system performance with advanced Thermolite® Pro fabric, which uses infrared-absorbing ceramic pigments and hollow-core fibres to trap body heat. Adding up to 4°C|7°F of warmth with minimal bulk, it’s ideal for ultralight expeditions. Stretch-knit fabric and articulated arm openings ensure unrestricted mobility. Treated with HeiQ Fresh odour control, it’s quick-drying, machine washable, and helps prolong your sleeping bag’s lifespan by reducing wash frequency.
FEATURES
- Lightweight and insulative, Thermolite® Pro technology with hollow-core fibres and infrared-absorbing pigments enhances warmth with minimal pack size
- Freedom to Move – Stretch-knit and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
- Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
- Fits any sleeping bag - Stretch fabirc means the Reactor Liner fits any shape of sleeping bag
- Stay Fresh Longer – HeiQ Fresh odour control technology keeps the liner fresh after extended use
- Sleep System Integration – Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
- Easy to Keep Clean – Machine washable construction simplifies care and reduces wear on your sleeping bag over time
- Lower Impact Materials – Crafted with certified recycled fibres and bluesign APPROVED materials to minimise environmental impact
TECH SPECS
Weight
S: 235g
R: 255g
L: 260g
Certification
RCS - 1114661
Dimensions
Short: 80 x 178cm
Regular: 80 x 193cm
Long: 80 x 198cm
Ideal for
Backpacking, Cycle touring, Paddle touring
Packed dimensions
10 x 10 x 18cm
Recommended user height
S: 170cm
R: 183cm
L 198cm
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Looks good, feels good for my pocket.
Good price, while still being stylish. Slots fit all my major items shown above and now I cannot live without it.
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Reviewed in the United States on May 18, 2025
★★★★★ 5
Functional and aesthetic
Does what you expect it to do. Great for organizing, very functional and very easy to incorporate into your table design.
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Reviewed in the United States on April 26, 2025
★★★★★ 5
Great purchase
My husband loves this so he has a place to put his phone wallet and keys and always knows where they are. Great idea! Small, keeps you organized, solid, good looking and gets the job done!
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Reviewed in the United States on October 24, 2024
★★★★★ 4
Cool piece
My messy night table looks clean for a few nights, then junk just piles up on top of this tray. But that might just be a me problem
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Perfect gift!
Bought one of these for my father, and one of these for my uncle for Christmas. They both like how they weren’t flimsy, stayed in place, and kept a minimalistic aesthetic. I like, knowing that they have a place to keep their important belongings as they’re getting older, and seem to be misplacing things often.
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Reviewed in the United States on January 8, 2024