Sea to Summit Reactor Insulated Sleeping Bag Liner


The THERMOLITE Reactor Fleece sleeping bag liner is a luxuriously soft and super warm liner that can bump up the warmth of your sleeping bag considerably. It can also be used as a stand-alone sleeping bag in warmer climates and has a quarter length zipper to control temperature and allows the user to get in and out of easily. The hollow core fibers that make up this fabric trap heat effectively, keeping you toasty warm. If you’re looking for a high warmth to weight ratio or a lightweight summer bag, this is an ideal choice.

Last updated on June 9, 2024 1:35 pm

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SKU: 103094 Categories: , Tags: , ,


Close up of fleece liner.


The Reactor Series Sleeping bag liners and the foot boxes of the Women’s Trek, Talus and Latitude Sleeping Bags use hollow core THERMOLITE fiber to add warmth. Hollow cores fibers trap extra air for insulation (just like the hollow-cores of polar bear or caribou fur). Knitted THERMOLITE fabric is soft and stretchy and comes in three different weights: 80g/m² fabric used in the Reactor and the underside of the Compact Plus liners; a 110g/m² fabric which is used in the Extreme, and the core and foot box of the Compact Plus liner; and the Fleece, the warmest of all the fabrics.

line drawings


Packed Size Comparison: A little larger than a wide mouth water bottle (BPA free of course).

Weight: 14.8 oz ≈ Lighter than a roll of paper towels. Warmth: Add a full-season rating to your sleeping bag.

BONUS: Easy to wash and helps to keep your down bag cleaner for longer.

Sea to Summit Reactor Insulated Sleeping Bag Liner, Fleece (79 x 28), Sea To Summit

Price: C $186.99
as of June 9, 2024 1:35 pm
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Price History


Current Price C $186.99 June 9, 2024
Highest Price C $259.95 January 29, 2024
Lowest Price C $126.97 December 26, 2023
Since December 12, 2023

Last price changes

C $186.99 June 9, 2024
C $177.07 April 11, 2024
C $195.18 March 19, 2024
C $179.65 February 19, 2024
C $259.95 January 29, 2024


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