Sea To Summit Reactor Lightweight Liner - Regular
SKU: 34114421068

Sea To Summit Reactor Lightweight Liner - Regular

Sale price$62.96 Regular price$69.95
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  • USA
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Sea To Summit Reactor Lightweight Liner - RegularOptimized 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 fibers 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 odor control, its quick drying,

Optimized 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 fibers 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 odor control, it’s quick-drying, machine washable, and helps prolong your sleeping bag’s lifespan by reducing wash frequency.

Best Use: Backpacking, Cycle touring, Paddle touring

Features

  • Lightweight and insulative, Thermolite® Pro technology with hollow-core fibers 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 fabric means the Reactor Liner fits any shape of sleeping bag
  • Stay Fresh Longer – HeiQ Fresh odor 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 fibers and bluesign APPROVED materials to minimize environmental impact

Tech specs


Regular
Weight 9.0oz
Dimensions 76.0 x 31.5 in
Packed Size 3.9 x 7.1 x 3.9 in

Material(s)
100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 34114421068

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4.0 ★★★★★
Based on 1072 reviews
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M
Verified Purchase
moshe
Bozeman, US
★★★★★ 5
Super comfy
Color: Soft, Size: Queen(28"×16"×5.9")
Absolutely love this pillow! It’s incredibly soft, supportive, and stays cool throughout the night. I’ve been sleeping much better since getting it. Great quality, perfect firmness, and definitely worth every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
K
Verified Purchase
KA
West Palm Beach, US
★★★★★ 5
Soft pillow
Color: Soft, Size: Standard(24"×16"×5.5")
This latex pillow has been a great addition to my sleep routine. It offers the perfect balance of softness and support, especially side sleeping. I noticed less pressure on my neck and shoulders after using it. I also like that it’s made with natural latex and free from harsh memory foam chemicals. The removable cover is convenient, and the packaging makes it feel like a premium product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
G
Verified Purchase
Ger. K
Waukegan, US
★★★★★ 5
Perfect Balance of Comfort & Support!
Color: Soft, Size: Standard(24"×16"×5.5")
I absolutely love this pillow! The Talalay latex feels incredibly supportive while still being soft and comfortable. Unlike memory foam, it doesn't trap heat or give off any chemical smell-just clean, natural comfort. I've noticed a huge difference in my sleep quality; it relieves pressure from my neck and shoulders, and I wake up without stiffness. The Tencel cover is smooth, breathable, and removable for easy washing, which makes it feel extra fresh. The packaging was beautiful, making it feel like a premium gift right out of the box. If you're looking for a high-quality natural pillow that's supportive, durable, and chemical-free, this is it. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 31, 2025
J
Verified Purchase
J. K. Brough
Whiting, US
★★★★★ 3
Hard to judge thickness with only dimensions to go by
Color: Soft, Size: Standard(24"×16"×5.5")
Very nice quality, just what I hoped for. But it's just too thick for me. I'm thinking of using my electric knife to try to skim enough off to be usable. I've slept most of my life on latex pillows and have not enjoyed using other pillows.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
A
Verified Purchase
AmazonPrime User
New York, US
★★★★★ 4
Good pillow, but too high for my neck
Color: Soft, Size: Standard(24"×16"×5.5")
I love the Talalay latex for the quality, and that there is no smell. However, it is too high for my neck. I wish the company would make it in a 3" version, instead of just 5.5". They do have a "slim" version, but it is not even the same kind of pillow. It measures 2.5" and the back side is completely flat, so you can not turn it in over for use. The company basically took this 5.5" version and cut it in half for the slim.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2025

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