Short || Reactor Midweight Sleeping Bag Liner
Short
Short || Reactor Midweight Sleeping Bag Liner
Short
Reactor Midweight Sleeping Bag Liner Reactor Midweight Sleeping Bag Liner Reactor Midweight Sleeping Bag Liner Reactor Midweight Sleeping Bag Liner
Short || Reactor Midweight Sleeping Bag Liner
Short
Short || Reactor Midweight Sleeping Bag Liner
Short
Reactor Midweight Sleeping Bag Liner Reactor Midweight Sleeping Bag Liner Reactor Midweight Sleeping Bag Liner Reactor Midweight Sleeping Bag Liner

Reactor Midweight Sleeping Bag Liner

$74.95
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Highlights

Best UseBackpacking, Cycle touring, Paddle touring

Length70in | 178cm

Packed Weight12.2 oz | 345 g

Packed Size7 × 5 × 5 in | 19 × 11.5 × 11.5 cm

Performance
Weight
  • Ultralight
  • Lightweight
  • Midweight
Packability
  • Ultra Compact
  • Compact
  • Midsize
About The Product

The Reactor Midweight enhances your sleep system with advanced Thermolite® Pro fabric. Infrared-absorbing ceramic pigments and hollow-core fibres trap body heat, adding up to 6°C|11°F to a sleep system with minimal bulk. Stretch-knit fabric and arm openings allow unrestricted sleep, making it a great fit for any shape sleeping bag. Quick-drying and easy to clean, it features HeiQ Fresh odour control and helps extend your sleeping bag’s lifespan by reducing wash frequency.

Product Features
  • Boosts Sleep System Warmth – Thermolite® Pro uses Far Infrared technology and hollow-core fibres to trap and reflect body heat without extra bulk
  • Freedom to Move – Stretch-knit and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
  • Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk

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Short || Reactor Midweight Sleeping Bag Liner

Reactor Midweight Sleeping Bag Liner Short

Short || Reactor Midweight Sleeping Bag Liner

Reactor Midweight Sleeping Bag Liner Short

Description || Reactor Midweight Sleeping Bag Liner

Features

  • Boosts Sleep System Warmth – Thermolite® Pro uses Far Infrared technology and hollow-core fibres to trap and reflect body heat without extra bulk
  • Freedom to Move – Stretch-knit and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
  • Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
  • Stay Fresh Longer – HeiQ Fresh odour control technology keeps the liner fresh after extended use
  • Sleep System Integration – Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
  • Easy to Keep Clean – Machine washable construction simplifies care and reduces wear on your sleeping bag over time
  • Lower Impact Materials – Crafted with certified recycled fibres and bluesign APPROVED materials to minimise environmental impact

Technical Features

HEIQ Fresh
Thermolite Eco Made
Thermolite Pro

Tech specs

  • Best Use
    Backpacking, Cycle touring, Paddle touring
  • Materials
    100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester
  ShortRegularLong
Weight330 g11.6 oz350 g12.3 oz365 g12.9 oz
Dimensions178 × 80 cm70 × 31 in193 × 80 cm76 × 31 in198 × 80 cm78 × 31 in
Packed Size19 × 11.5 × 11.5 cm7 × 5 × 5 in19 × 11.5 × 11.5 cm7 × 5 × 5 in19 × 11.5 × 11.5 cm7 × 5 × 5 in
Recommended User Height170 cm66.93 in185 cm72.83 in198 cm77.95 in

Frequently Asked questions

How much warmth does a Reactor Midweight add to a sleeping bag?

The added warmth depends on how well the sleeping bag retains heat and how well the sleeping mat insulates. When paired with a quality bag and mat, a Reactor Midweight can add up to 6 °C / 11 °F.

Which Reactor is the warmest?

The Reactor Fleeceweight is the warmest option, followed by the Reactor Midweight, and then the Reactor Lightweight.

Can a Reactor be machine washed and dried?

Reactor liners can be machine washed without special soaps. Do not use fabric softeners. Air dry or machine dry on a cool to warm cycle without dryer sheets.

Can a Reactor Midweight work as a stand-alone sleeping bag?

In summer temperatures and still air conditions, a Reactor Midweight can function on its own for sleepers wearing long base layers. The fabric is not windproof.

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