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Reactor Extreme Liner (adds up to 25°F)

Reactor Extreme Liner (adds up to 25°F)

$69.95-$74.95
Perfect for cold weather backpacking+ View tech specs
Size
Shape
QTY:
Highlights

BEST USE: Backpacking & Camping

WEIGHT: 14 oz | 399 g

LENGTH: 6 ft 10 in | 210 cm

PACKED SIZE: 6.5 x 4.5 in | 17 x 11.5 cm

Shipping & Returns

Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.

2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).

All orders are eligible for fast and easy returns within 60 days of purchase.

For more details, please check out our Help Center

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Reactor Extreme Liner (adds up to 25°F)
Reactor Extreme Liner (adds up to 25°F)
$69.95-$74.95
Description || Reactor Extreme Liner (adds up to 25°F)

Description

The THERMOLITE® Reactor™ Extreme liner is Sea to Summit’s warmest knitted sleeping bag liner. If your adventures take you to colder climates, the Reactor Extreme will add plenty of warmth to a sleeping bag. Plus in warmer weather, it can be used as a ‘stand alone’ sleeping bag. The hollow core fibers of the THERMOLITE® fabric work like a polar bear's fur and, along with the knitted structure, trap plenty of insulating air. Super soft and amazingly stretchy, the Reactor Extreme uses a heavier version of THERMOLITE®  to provide extra warmth for an incredibly comfortable night’s sleep. Use one to build your cooler-weather sleep system and to help keep your sleeping bag clean too.

Design Details

Technical Features

THERMOLITE

Tech specs

  • Added Warmth
    Up to 25°F / 14°C
  • Best Use
    Backpacking, Camping & Winter Camping
  • Comes With
    Ultra-Sil stuff sack
  • Material(s)
    Thermolite polyester fabric
  • Shape
    Mummy
Mummy
Regular MummyLong Mummy

Frequently Asked questions

Suitable for use with a rectangular / wide sleeping bag?

The knitted fabric of the Reactor is so stretchy that you won’t feel the shape of the liner at all.

Equipped with a zipper?

No - to keep this sleeping bag liners at a minimal weight and packed size we did not include a zipper.

Washed in a washing machine?

Yes - you can wash your liner in a washing machine with normal supermarket laundry ‘soap’ and dry it in a dryer, using cool or low heat. Fabric softeners will reduce wicking performance of the fabric.