Thermarest dorado duo coupler grey create a luxurious sleep system for two by mating this sheet with an open dorado duo hd sleeping bag and two mattresses this soft and comfy brushed polyester sheet connects two mattresses with an open dorado tm duo hd sleeping bag to create a plush outdoor bed it mates with the bag via integrated zippers and includes sleeves that can accommodate two large 25 x 77 in or 63 x 19 cm rectangular mats up to 4 inches 10 cm thick this sheet can also be pai