The Mat Repair Kit is designed for use with Sea to Summit Air Sprung Cell sleeping mats, and with some Sea to Summit Self-Inflating mats. The kit includes peel-and-stick 3M adhesive patches, and spare valve inserts for Air Sprung Cell mats. The self-adhesive patches will work on the following Self-Inflating (SI) mats: The patches will not form an airproof bond on the knit upper surface of the Comfort Plus and Comfort Deluxe Self Inflating Mats.