TravelSheet Coupler

A TravelSheet-Coupler is a TravelSheet with a 2-way No.5 YKK-Zipper. A Coupler is a comfortable TravelSheet for one person, it unzips to a sheet for two or zips together with another TravelSheet-Coupler, a Tropic Traveler, an Outdoor Blanket/Sleeping Bag or a Fleece Blanket/Sleeping Bag to make a sleeping bag for two. (COCOON TravelSleepSystem^TM)