Camping in colder weather? Give yourself an extra layer of insulation with this Fleece Sleeping Bag Liner from Trail. Lightweight to carry and supremely snug to sleep in, it can be placed inside a regular sleeping bag to lift your warmth and comfort to a whole new level.Microfleece Material Made from 150gsm microfleece fabric which has an excellent warmth to weight ratio. Delivers the same level of warmth as a two season sleeping bag but is less than half the weight