Sea to Summit Reactor Fleece Sleeping Bag Liner Size:Standard Mummy it works as a midlayer

it works as a midlayer or standalone piece when temperatures drop and output stays high

a zip fly and belt loops

Crafted with a blend of Merino wool and Lyocell

Made with soft organically grown cotton and Merino wool

Sea to Summit Reactor Fleece Sleeping Bag Liner Size:Standard Mummy it works as a midlayerThe Sea to Summit Reactor Fleece Sleeping Bag Liner is constructed using advanced hollow core Thermolite Pro fibers in a grid pattern design, making it the warmest liner option available for cold weather conditions. With added features such as shoulder zippers and a drawcord footbox, this liner gives you the ability to regulate your body temperature throughout the night. Its compatibility with the Free Flow Zip system of Sea to Summit sleeping bags