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The Reactor Fleeceweight Liner boosts warmth for cold conditions while staying packable. It traps body heat, adding up to 8°C (14°F) of warmth.
The Reactor Fleeceweight Liner boosts warmth for cold conditions while staying packable. It traps body heat, adding up to 8°C (14°F) of warmth.
Sea To Summit

Sea To Summit Reactor Fleeceweight Sleeping Bag Liner Regular Picante

$89.95
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Your Pre-Order is prioritized (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or dispatch to you — it often never even hits the stock room shelves!

Prelaunch

With Prelaunch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Preorders.

So, instead, you can submit your email address for the item you are interested in, and we will email you as soon as stock arrives in the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indicative purposes only and can change at any time without notice.

The dates we provide are based on information given by our suppliers. Whenever we get updated information from our suppliers we will endeavor to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for dispatch to you or collection via Click & Collect on Undetermined

Sea To Summit Reactor Fleeceweight Sleeping Bag Liner Regular Picante

Season:FA26

Brand:Sea To Summit

Code:534-PIC

The Reactor Fleeceweight Liner boosts warmth for cold conditions while staying packable and easy to care for.

Made from Thermolite® Fleece, this liner stretches as you move and includes armholes for unrestricted comfort, whether you are a side sleeper or tend to toss and turn. It fits inside any sleeping bag and snaps into compatible Sea to Summit bags for secure placement and easier entry and exit. Using Thermolite® hollow-core fibers in a grid-fleece construction, the liner traps and reflects body heat to enhance your sleep system’s performance, adding up to 8°C (14°F) of warmth with minimal added weight. The fabric is quick-drying and easy to clean, with HeiQ Fresh odor control to stay fresher on extended trips. It also helps extend a sleeping bag’s lifespan by reducing the need for frequent washing, preserving loft and long-term performance. The ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk, and it can be used on its own as a lightweight sleeping bag in warm-weather conditions.

Features:

  • Thermolite® Fleece fabric and armholes allow unrestricted movement in any sleep position.
  • Grid-fleece with hollow-core fibers traps and reflects heat, adding up to 8°C (14°F) of warmth.
  • Fits any sleeping bag and snaps into Sea to Summit bags for secure placement and easy entry and exit.
  • Reduces washing frequency to maintain insulation loft and long-term performance.
  • Quick-drying fabric with HeiQ Fresh odor control stays fresher on multi-day trips.
  • Ideal for cold-weather backpacking, hut trips, and winter bivvies.
  • Technical shape with a fitted hood delivers optimal warmth and comfort.
  • Crafted with certified recycled fibers and bluesign® APPROVED materials to minimize environmental impact.
Technical Information
  • Best use
    Cold-weather backpacking, ski touring, (stand-alone) summer use
  • Added warmth
    Up to 8°C (14°F)
  • Materials
    100% post-consumer recycled polyester; Stuff sack: 100% polyester
  • Shape
    Mummy, ergonomic design with fitted hood
  • Features
    Armholes, HeiQ Fresh odor control, snap connectors, stretch-knit
  • Included accessories
    Ultra-Sil stuff sack
  • Packed size
    25 x 15 x 15 cm (10 x 6 x 6 in)
  • Size Regular - Height
    185 cm (72.83 in)
  • Size Regular - Weight
    400 g (14.1 oz)
  • Size Regular - Dimensions
    193 x 80 cm (76 x 31 in)
Sizing Information
Professional Opinion
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