SKU: 63664530167

Reactor Midweight Liner Large

Sale price$76.45 Regular price$84.95
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Reactor Midweight Liner LargeThe Reactor Midweight enhances your sleep system with advanced Thermolite Pro fabric. Infrared absorbing ceramic pigments and hollow core fibers trap body heat, adding up to 6C 11F to a sleep system with minimal bulk. Stretch knit fabric and arm openings allow unrestricted sleep, making it a great fit for any shape sleeping bag. Quick drying and easy to clean, it features HeiQ Fresh odor control and helps extend your sleeping bags lifespan by reducing

The Reactor Midweight enhances your sleep system with advanced Thermolite® Pro fabric. Infrared-absorbing ceramic pigments and hollow-core fibers trap body heat, adding up to 6°C|11°F to a sleep system with minimal bulk. Stretch-knit fabric and arm openings allow unrestricted sleep, making it a great fit for any shape sleeping bag. Quick-drying and easy to clean, it features HeiQ Fresh odor control and helps extend your sleeping bag’s lifespan by reducing wash frequency.

  • Boosts Sleep System Warmth – Thermolite® Pro uses Far Infrared technology and hollow-core fibers to trap and reflect body heat without extra bulk
  • 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
  • 100% Post-Consumer Recycled Polyester
  • Stuff Sack: 100% Polyester
  • Dimensions: 78.0 x 31.5 in | 198 x 80 cm
  • Packed Size: 4.5 x 7.5 x 4.5 in | 11.5 x 19 x 11.5 cm
  • Weight: 12.9 oz | 365g
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: 63664530167

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4.2 ★★★★★
Based on 19 reviews
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Verified Purchase
Samantha
Fort Morgan, US
★★★★★ 5
Loved
Loved the material and fit me perfectly. Very soft and not too heavy at all.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
J
Verified Purchase
Joseph Garces
Whiting, US
★★★★★ 5
Thick and soft.
What a steal. Thick, warm, soft and such high quality. This is an amazingly nice sweater.
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Reviewed in the United States on May 23, 2026
K
Verified Purchase
Kristina
Louisville, US
★★★★★ 5
It’s a win
Size: 5X, Color: Burgundy
I like this shirt. It’s super comfortable I bought 2 sizes to big in order for it to be super loose fit and longer. I bought the red/maroon color and it’s a very nice color. It’s light weight so you aren’t so hot that it stinks. The size seems to be true to size really. It looks super good with a nice pair of leggings. Seems well made. Washes good. It’s a win
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Reviewed in the United States on February 19, 2026
N
Verified Purchase
Nan
Port Orchard, US
★★★★★ 5
Lightweight sweater
Size: XX-Large, Color: Navy
This sweater is very soft and lightweight making it perfect for spring and fall. The colors are beautiful and match the posted images. I have bought several different colors because I like them so much. I have larger arms and the sleeves have plenty of room. They do not wrinkle easily and are holding up well with routine wear and washing. My husband accidentally washed my navy one in hot water and put it in the dryer which made it fade and shrink considerably so be careful to read the label on how to wash and dry the garment and it will be just fine:
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Reviewed in the United States on June 8, 2026
J
Verified Purchase
Ja Cabana
Cuba, US
★★★★★ 4
Very nice, yet hangs
Size: XX-Large, Color: Ivory
Soft, pretty and cozy. The bright clean color of white is crisp and pure. Unfortunately, the shoulders are too big and it hangs or is too wide and in turn, the sleeves are too long. The rest of it is proportionally correct for my body, so a different size would not work.
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Reviewed in the United States on May 18, 2026

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