To induce tranquility and a deep sleep with a stability that a futon and a cover at the location around a collar do not separate by providing a nylon open fastener by which a collar protective futon cover and a main futon cover can be detachable from protruding backing cloths, disposing attaching strings for the futon and the covers, and thus, dividing or integrating the futon and the covers.

Protruding backing cloths 107A and 107B are provided on a futon 102, and a collar protective futon cover 103 and a main futon cover 104 are integrated by providing detachable nylon open fasteners 105, 106A, 106b, 108A and 108B. Also, the taking-out/putting-in of the futon 102 is facilitated by disposing an opening/closing fastener 109. Also, attaching strings 110 and 111 for the futon and the futon covers are provided, and as a whole body, the futon and the futon covers are closely joined and integrated at the location of the collar. At the same time, the cover is divided into the collar cover 103 and the main cover 104, and the overall futon is stabilized by setting respective covers. Thus, the using value of the futon as a soft and flexible beddings is increased.