Cotton Sleeping Bag Liner Regular Black Pit zips provide ventilation to

Pit zips provide ventilation to regulate body temperature

Body fabric made with 91% recycled polyester

Underarm zip vents

Resilient and lightweight

this updated geometry supports an even smoother ride

Cotton Sleeping Bag Liner Regular Black Pit zips provide ventilation toversatile sleeping bag liner, travel accessory, or lightweight cover up From couch surfing sessions, to warm weather nights under the stars, this cotton liner is the perfect travel companion. Cotton polyester blend is soft against skin, and is ideal for adding the extra warmth you need to a sleeping bag, or on its own as a barrier between you and a mattress on warm weather overnights.