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Sea to Summit

Sea to Summit Reactor Fleeceweight Liner (2026)

Sea to Summit Reactor Fleeceweight Liner (2026)

$144.95 CAD
$144.95 CAD
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Shipping calculated at checkout.
Size

Add warmth and comfort to your sleep system with the Sea to Summit Reactor Fleeceweight sleeping bag liner. Designed for camping, backpacking, and outdoor adventures, this lightweight fleece liner uses THERMOLITE® hollow-core fibres and grid fleece to trap and reflect body heat, adding up to 8°C (14°F) of warmth to your sleeping bag.

Stretch fleece and strategically designed arm openings provide freedom of movement, while snap attachments make it easy to connect the liner to compatible Sea to Summit sleeping bags. The liner is also quick-drying and easy to clean, with HeiQ Fresh odour control to help keep it feeling fresh between washes.

Using a sleeping bag liner can also reduce how often you need to wash your sleeping bag, helping protect its loft and extend its lifespan.

Features

- Boosts Sleep System Warmth – Reactor Fleeceweight uses Thermolite® hollow-core fibres and grid fleece to trap warmth with minimal added weight
- 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
- Can be used on its own as a lightweight sleeping bag in warm-weather conditions

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