Reactor Lightweight Sleeping Bag Liner Regular

About the Sea to Summit Reactor Lightweight Liner - Regular

What is the Sea to Summit Reactor Lightweight Sleeping Bag Liner Regular good for?

This liner is designed for backcountry trips, multi-day treks, and extended camping where sleeping bag warmth needs vary with conditions. It's built for users who need thermal versatility without carrying additional weight. The Reactor Lightweight Liner works well in three-season environments, alpine camps, and shoulder-season adventures. It performs across temperature ranges where base sleeping bag warmth requires supplementation whilst maintaining minimal pack volume.

The stretch-knit construction provides complete movement freedom whilst fitting inside any sleeping bag. Thermolite Pro insulation uses Far Infrared Technology and hollow-core fibres to trap and reflect body heat, adding up to 4°C of warmth without bulk. The liner also features arm openings with snap closures that increase practicality and unrestricted movement during rest. In addition, HeiQ Fresh odour control treatment keeps the liner fresh throughout extended use, whilst quick-drying performance and easy cleaning reduce washing frequency.

Sea to Summit's expertise in lightweight camp systems ensures this liner meets practical requirements for minimalist travel. The integration of recycled Thermolite materials maintains environmental responsibility without sacrificing thermal performance. This product reduces the need for frequent sleeping bag washing, helping maintain insulation loft and extend equipment lifespan through real-world use.