SKU: 54671518032

Reactor Lightweight Liner Short

Sale price$58.46 Regular price$64.95
Save 10%

Pay in installments of $16.24 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Reactor Lightweight Liner ShortOptimized 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.

  • 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
  • 100% Post-Consumer Recycled Polyester
  • Stuff Sack: 100% Polyester
  • Dimensions: 70.1 x 31.5 in | 178 x 80 cm
  • Packed Size: 3.9 x 7.1 x 3.9 in | 10 x 18 x 10 cm
  • Weight: 8.3oz | 235g
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: 54671518032

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 25 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Briana Stierwalt
Los Angeles, US
★★★★★ 5
Perfect Fit & Great Quality for Kids!
Color: Sky Blue/Celeste
These goggles are amazing for little swimmers! They fit my child perfectly without leaking or slipping, and the adjustable straps make them super easy to customize. The soft seal is comfortable around the eyes, and my kid actually enjoys wearing them , no complaints about water getting in. The lenses are clear and don’t fog up, even after long pool sessions. Great quality from Speedo as always!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2025
M
Verified Purchase
mbr
New York, US
★★★★★ 4
so cool!
Color: Mariner Silver/Emerald/Silver, Color: Mariner Silver/Emerald/Silver
so cool!! they were a bit big on my 4 year old, but fit perfectly on my 8 year old! since it was a little wide, the water poured in, but my 8 year old really enjoyed it and they look like sunglasses!! he said they were comfortable and they were so easy to put on and take off, since the straps weren't rubber. the lens scratch a little bit and they don't come with a pouch to keep in. still, great value for the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 4, 2025
S
Verified Purchase
Sarah B
Birmingham, US
★★★★★ 5
Good seal and cute in photos
Color: Pop Rainbow Sweet Purple, Color: Pop Rainbow Sweet Purple
We had the prior version of these Speedo kids’ goggles and these ones are much better. First, they have the same great no catch string that comes on and off without pulling hair. But they also have a better seal around the eyes, and so after days of hotel pool and swim class swimming we haven’t had a leak yet. The new frames also look a lot more like really cute kids’ sunglasses, so they’re great for all-day hotel pool wear and look great in our holiday photos.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
C
Verified Purchase
Courtney
Port Orchard, US
★★★★★ 5
4 year old approved!
Color: Pop Rainbow Flare Pink, Color: Pop Rainbow Flare Pink
These goggles are absolutely perfect for my 4.5 year old. She is obsessed with them and they are easy enough for her to put on herself. We've been using for over 6 months now and they are still in perfect condition! Highly recommend these because they seem very durable and difficult to break.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
S
Verified Purchase
sswan
Port Orchard, US
★★★★★ 5
Comfortable and don't leak
Color: Blue
These are my kids favorite swim goggles. The adjusting in the back helps them fit better and doesn't get tangled in his hair. This also don'ts leak like some other brands. Mom approved.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026

recommand products