STS - SEA TO SUMMIT Reactor Fleece Sleeping Bag Liner

Experience unmatched warmth and comfort in the wild with the Sea to Summit Reactor Fleece Sleeping Bag Liner. Designed for those who demand extra coziness on cold nights, this liner features hollow-core Thermolite® EcoMade fibers woven in a unique grid pattern, delivering exceptional insulation without unnecessary bulk or weight.

Regulate your temperature effortlessly with convenient shoulder zippers and a drawcord footbox, which also aligns perfectly with Sea to Summit’s Free Flow-Zip system for seamless integration. Ventilation is easy to control, making it versatile for a range of conditions. The drawcord footbox allows you to walk around camp while still wearing your liner—perfect for late-night restroom trips or early morning warmth.

Built with the environment in mind, the Reactor Fleece Liner uses recycled Thermolite EcoMade fibers that are GRS-certified and made from 100% textile waste, offering the same quality and warmth as their polymer counterparts but with a lower carbon footprint. The mummy shape maximizes thermal efficiency, ensuring you stay toasty in even the chilliest environments.

Odor control is built-in, thanks to HeiQ Fresh technology, a biocide-free treatment that neutralizes body odor and keeps your liner fresh after extended use. Use it as a standalone sleeping bag in warm weather, or as a core component of your cold-weather sleep system for maximum warmth and comfort.

Key Features:

• Hollow-core Thermolite® EcoMade fibers for superior warmth
• Shoulder zippers and drawcord footbox for temperature regulation
• Mummy shape for maximum thermal efficiency
• HeiQ Fresh odor control technology
• Compatible with Sea to Summit Free Flow-Zip system
• Ideal for multi-season use—add a season to your sleeping bag
• Compact and lightweight for easy packing

Specifications:

• Weight: 13.8 oz / 390g (Compact Mummy)
• Length: 78 in / 198 cm
• Width: 31.5 in (at shoulders)
• Packed Size: 9.8 x 3.5 x 5.5 in / 25 x 9 x 14 cm
• Material: Thermolite® EcoMade Polyester