New never used Please check out my other great outdoor deals Complete your sleep system quiver with the ultra-soft Sleep Liner. This machine-washable liner can be used on its own or partnered with a quilt or blanket using the sewn-in loops. Slide this into your sleeping bag to add up to 5F/3C warmth and provides a soft interior to your bag. Three-quarter zip allows easy entry and exit. Stuff sack included. Brushed Polyester: Soft to the touch and easy to clean between adventures. Quilt and Blanket Loops: Customize your sleep system by layering our quilts or tech blankets for increased warmth. Added Warmth: Adds up to 5F/3C of warmth to your sleeping bag or quilt for nights when you need extra protection from the cold.