The Sea to Summit Reactor Extreme Liner increases sleeping bag warmth by up to 15%, providing added insulation in cold climates. Ideal for backpacking and camping.

Features:

• Traps insulating air to boost warmth by up to 15% for 1-season bags, 7% for 3-season bags
• Sustainable construction: 50% Thermolite®EcoMade from 100% textile waste and GRS Certified, 50% Thermolite® Pro with infrared technology
• Heiq Fresh FFL biocide-free effective odor control
• Technical mummy shape with drawstring hood
• Available in two sizes: regular and compact
• Easy care: machine washable, avoid fabric softeners and dryer sheets
• Packs into its own Ultra-Sil stuff sack