Sea to Summit | Outdoor Gear To Equip & Inspire

Reactor Extreme Sleeping Bag Liner (Like New)

Reactor Extreme Sleeping Bag Liner (Like New) - Main image
$55.22 $89.95 In stock

An essential component in your sleep system, the Reactor Extreme liner with Thermolite® Pro fabric utilizes innovative infra red-absorbing ceramic pigments to give your system the thermal boost needed in colder-weather adventures.

The soft, wicking stretch-knit fabric provides unmatched comfort and freedom of movement while still allowing the Reactor Extreme liner to fit any sleeping bag. Additionally, the drawcord footbox offers plenty of ventilation and the versatility of walking around camp while still wearing your liner if needed.

Features

  • Thermal boost to retain heat and warmth. As the core of your sleep system the Reactor liner extends the performance of your sleeping bag and sleeping mat in the coldest of conditions
  • Thermolite® Pro technology using knitted, hollow-core fibers and infrared-absorbing ceramic pigments to reflect your body's heat back for enhanced warmth and comfort
  • Drawcord footbox and shoulder openings can be opened or closed for optimal comfort and integrates perfectly with the footbox of our Free-Flow Zip system in select Sea to Summit sleeping bags
  • HeiQ Fresh odor control technology helps keep the liner fresh even after extended use
  • Knitted fabric provides incredible stretch and freedom of movement in this mummy-shaped liner and works perfectly with sleeping bags of any shape
  • Sea to Summit Guarantee is offered for the Lifetime of this product
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Edward ★★★★★

Bought this "like new" and honestly it looks untouched, which is a relief. The ceramic pigment tech in the Thermolite fabric genuinely added noticeable warmth to my bag on a 40°F night, so I didn't have to layer up as much as usual.

Grace P. ★★★★★

The Thermolite Pro fabric feels surprisingly light even though it adds real warmth to my bag. I slept through a 45-degree night without zipping my quilt all the way, and the infrared ceramic tech did its job quietly. For the price, this is a solid upgrade for shoulder-season camping.

Eli O. ★★★★★

The ceramic pigment tech actually works—my sleeping bag felt noticeably toastier on a damp, 40-degree night, and the Thermolite fabric breathes well enough that I didn’t wake up sweaty. It’s thin and packs down tiny, but that’s the tradeoff for the warmth boost. Glad I grabbed this “Like New” one; i