Extended return period: until December 31, you have 60 days to return your order.

Sea to Summit Reactor Extreme Bag Sheet

Discover the Sea to Summit Reactor Extreme liner: warmth, versatility and reinforced insulation thanks to infrared technology and Thermolite® Pro stretch fabric. Perfect for outdoor adventures with its mummy shape and drawcord.

63.96€ -20% 79.95€
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Order and be delivered on  11/12/2025
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Product details

Sea to Summit Reactor Extreme Bag Sheet

Immerse yourself in comfort and thermal efficiency with Sea to Summit's Reactor Extreme liner. Featuring a mummy shape and Thermolite® Pro fabric, this liner offers enhanced insulation and exceptional versatility to tackle the coldest conditions with confidence.

Technical features of the Reactor Extreme liner include:

  • Thermolite EcoMade: This sustainable fiber provides extra insulation, trapping heat while wicking away moisture for optimal comfort. Made from 100% recycled resources, Thermolite® EcoMade guarantees thermal performance without compromising the environment.

  • HeiQ Fresh: Effective body odor treatment thanks to HeiQ Fresh FFL odor control technology, ensuring you feel fresh while sleeping outdoors.

  • Thermolite Pro: Thermolite® Pro fiber technology with FIR (far infrared) technology provides extra thermal reinforcement for increased warmth and comfort in cold weather. Special ceramic pigments generate heat for your body, improving heat retention.

The Reactor Extreme lining is also designed to be durable, with a fabric made from 50% recycled yarns, helping to preserve the environment while providing you with exceptional comfort.

Get ready to face the elements with confidence thanks to the Reactor Extreme liner. Its innovative technology, combined with an ergonomic design and quality construction, makes it a must-have for adventurers seeking ultimate performance and comfort in the great outdoors.

Additional information:

SHAPE: Mummy

WEIGHT: Compact : 353 g / Standard: 383 g

THERMAL BOOST: + 15%

DIMENSIONS: Compact : 80 x 198 cm / Standard: 80 x 216 cm

Data sheet
  • Type : Unisex

The brand SEA TO SUMMIT

SEA TO SUMMIT
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