Its called the gap of cold. It mysteriously materializes in the middle of the night between two sleeping pads--and the occupant who rolls into the gap first is subjected to the hard, cold realities of slippery camping and backpacking mattresses. Expeds Coupler Kit features two nylon straps that eliminate the gap of cold even with mattresses of varied proportions. A handy hook-and-loop design allows you to adjust the sizing of varied mattress lengths and widths, even if the mattress isnt made by Exped. When youre ready to break camp, roll up the Exped Coupler Kit and stick it in your pocket or backpack pouch. We cant guarantee you marital bliss on your backpacking trip, but the Exped Coupler Kit can keep both of you closer together throughout the night.