Reactor Fleeceweight Liner

Overview

The Reactor Fleeceweight Liner uses hollow-core fibers and grid fleece construction to trap and reflect your body heat, delivering up to 8°C (14°F) of warmth without adding bulk. Lightweight and packable, it's ideal as a standalone layer in mild conditions or as a sleeping bag liner for enhanced insulation on cold nights. Perfect for backpacking, camping, and travel where every ounce counts.

Features

• Boosts Sleep System Warmth – Reactor Fleeceweight uses Thermolite® hollow-core fibers 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 odor 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 fibers and bluesign APPROVED materials to minimize environmental impact
• Can be used on its own as a lightweight sleeping bag in warm-weather conditions

Specifications

• Material(s): 100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester