Sea to Summit have created some excellent sleeping bag liners that will be a welcome addition to anyone's sleeping system. Small and compact in size, a sleeping bag liner should be on your kit list especially if camping in colder environments as they will certainly add a degree or two of extra warmth. Longer term a liner will help to extend the life of your sleeping bag so they really are a good investment. Choose from either cotton or silk Sea to Summit liners both of which come with their own handy storage bag.
