To permit the retention of body warmth and the warming of the body to be effectively and synergistically improved.

Female snaps 15 (shoulder connection portions) in the vicinities of shoulder extension portions 11 are connected to upward male snaps 17 (central connection portions) of futon 1, the shoulder extension portions 11 are folded back, exposing the shoulders, and the shoulder extension portions 11 are folded back onto the body. Consequently, the shoulder extension portions 11 can be used for retaining body warmth. It is the same to upward female snaps (leg connection portions) 18 and the exposure of the legs. A far infrared generation layer 2 near to the body emits far infrared rays and warms the body, and a heat absorption and re-emission cloth far from the body absorbs the heat and re-emits far infrared rays. As the result, the equipment can absorb the heat to be emitted out of the futon 1 and re-emit far infrared rays, and furthermore can increase a warming effect.