Boost your sleep system’s warmth with the Reactor Fleeceweight. Thermolite® hollow-core fibers and grid fleece trap and reflect body heat, adding up to 8°C|14°F with minimal weight. The stretch fleece and arm openings allow freedom of movement, while snap attachments fit Sea to Summit sleeping bags for easy access. Easy to clean and quick-drying, it features HeiQ Fresh odor control. Using a liner reduces sleeping bag washes, helping preserve loft and extend lifespan.

• 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
  
• 100% Post-Consumer Recycled Polyester
  
• Stuff Sack: 100% Polyester
  
• Dimensions: 81.1 x 31.5 in | 206 x 80 cm
  
• Packed Size: 5.9 x 9.8 x 5.9 in | 15 x 25 x 15 cm
  
• Weight: 15.2oz | 430g