The Sea To Summit Reactor Thermolite Liner is a top-selling and ultra-light thermal sleeping bag liner designed to provide additional warmth in cold weather conditions. Crafted with hollow core fibres, this liner effectively traps heat and offers exceptional insulating properties. The mummy shape, foot box, and drawcord hood ensure a snug and comfortable fit. Compared to fleece, this liner is compact, lightweight, and highly stretchy, making it a popular choice among outdoor enthusiasts.

Features:

• Enhances sleeping bag warmth by up to 14°F / 8°C by trapping insulating air
• Stretchy Thermolite® fabric for superior comfort
• Lighter weight and more packable than traditional fleece liners
• Technical mummy shape with a drawstring hood for added warmth
• Easy care – machine washable without the need for special soap; avoid fabric softeners and dryer sheets
• Helps keep the sleeping bag clean
• Includes an Ultra-Sil stuff sack for convenient packing
• Dimensions: Length 208cm, Weight 248g, Packed Size 15 x 11 cm