SKU: 4515575314

Sea To Summit Reactor Fleeceweight Liner - Regular

Sale price$80.95 Regular price$89.95
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Sea To Summit Reactor Fleeceweight Liner - RegularBoost your sleep systems warmth with the Reactor Fleeceweight. Thermolite hollow core fibers and grid fleece trap and reflect body heat, adding up to 8C 14F with minimal weight. The stretch fleece and arm openings allow freedom of movement, while snap attachments fit Sea to Summit sleeping bags for easy access. Easy to clean and quick drying, it features HeiQ Fresh odor control. Using a liner reduces sleeping bag washes, helping preserve loft and

Boost your sleep system’s warmth with the Reactor Fleeceweight. Thermolite® hollow-core fibers and grid fleece trap and reflect body heat, adding up to 8°C|14°F with minimal weight. The stretch fleece and arm openings allow freedom of movement, while snap attachments fit Sea to Summit sleeping bags for easy access. Easy to clean and quick-drying, it features HeiQ Fresh odor control. Using a liner reduces sleeping bag washes, helping preserve loft and extend lifespan.

Best Use: Cold-weather backpacking, Ski touring, (Stand-alone) summer use

Features

  • Boosts Sleep System Warmth – Reactor Fleeceweight uses Thermolite® hollow-core fibers and grid fleece to trap warmth with minimal added weight
  • 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
  • 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
  • Can be used on its own as a lightweight sleeping bag in warm-weather conditions

Tech specs

Regular
Weight 14.1oz
Dimensions 76.0 x 31.5 in
Packed Size 5.9 x 9.8 x 5.9 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: 4515575314

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4.4 ★★★★★
Based on 7 reviews
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Product Reviews
R
Verified Purchase
Regal Mom
San Leandro, US
★★★★★ 4
XL sized suit review
Color: Light Blue, Size: X-Large
I ordered XL for my husband who is 6'1" and weighs 200 lbs. The pants' length was too long and we had to cut off two inches and get them hemmed. Jacket could be a little bigger in the mid section and shoulders but vest fit well. Could do without the fake handkerchief in the suit jacket pocket. Still liked the style and the color of the light blue suit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
J
Verified Purchase
jessica vasquez
Bozeman, US
★★★★★ 5
Perfect for teens
Color: Black, Size: XX-Large
Great suit! Great quality for the price. Very impressed. Bought for my teens. Didn't want to spend a lot on something they won't wear more than a couple times before they grow again. This suit is great. A tad long in the arms and legs. But overall, its perfect. Fitting suit, but got a size larger for their comfort. Surprised at the quality, my mom was impressed and she knows suits.
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Reviewed in the United States on March 29, 2026
K
Verified Purchase
Katherine
Houston, US
★★★★★ 5
Great suit!
Color: Black, Size: Medium
Looks super nice! For the price, it is definitely worth it. The fabric looks and feels great and the size range is good.
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Reviewed in the United States on May 9, 2026
K
Verified Purchase
Kia
Louisville, US
★★★★★ 5
​Perfect for a wedding! Everyone loved it
Color: Deep Blue, Size: XX-Large
​I bought this suit set for our wedding and it was a huge hit everyone loved how it looked! The slim fit is perfect and looks very sharp and modern. The material is great quality and it comes with everything you need, making it an incredible value. My kids got compliments all night!
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Reviewed in the United States on May 20, 2026
S
Verified Purchase
S Perez
New York, US
★★★★★ 5
Great quality
Color: Black, Size: X-Small
Fit my son perfect. Ordered XS he’s 5’5” 128 lbs. pants fit great, they weren’t too big or too long. He felt comfortable and got many complements. Tie color comes random not black like the picture.
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Reviewed in the United States on May 19, 2026

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