Skip to content

Reactor Liner (Thermal Boost + 12%)


Reactor Liner (Thermal Boost + 12%)

Our lightest thermal liner+ View tech specs
  • Size
  • Style

BEST USE Backpacking & Camping

WEIGHT: 268 g


PACKED SIZE: 11 x 15 cm

Shipping & Returns

We want you to have the best possible experience when using our website which is why we offer free shipping on orders over £50 and £3.95 for orders under this.

We aim to dispatch your order on the same day and deliver it the following working day For more details, check out our Shipping Policy.

We also offer a free-of-charge return service meaning you can buy in complete confidence from us. For more details, please check out our Refund Policy.

Find Locally
Reactor Liner (Thermal Boost + 12%)
Reactor Liner (Thermal Boost + 12%)


The THERMOLITE® Reactor liner is our top selling and lightest thermal sleeping bag liner. With a mummy shape and Thermolite® Pro fabric, the Reactor Liner uses new infrared technology paired with comfortable stretch fabric to offer extra warmth, versatility, and increased insulation. The drawcord offers added flexibility for premium comfort. Best suited to cold conditions.

Tech specs

  • Added Warmth
    Up to 6% in a 3 season bag and +12 in a 1 season
  • Best Use
    Backpacking, Camping
  • Comes With
    Ultra-Sil stuff sack
  • Material(s)
    50% Thermolite Pro & 50% Thermolite EcoMade
  • Shape
Compact With DrawcordStandard With DrawcordStandard Without Drawcord
Accessibility Icon This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion.