Abstract: A mat that can be connected to a pillow, a sleeping bag, or other mats, and is comfortable to sleep on, sturdy, and convenient to carry around; a pillow and a sleeping bag to be connected to the mat; and bedding including the pillow, the sleeping bag, and the mat. The mat 1 includes a primary mat body 10 and a strap 30 provided on the primary mat body 10 for attaching a pillow 100 to the primary mat body 10.

Abstract: A back bag such as a back pack, knapsack or a tucksack has a bottom-equipped bag portion, a pair of shoulder straps provided on the body-contact side of the bag portion and adapted to be hung from the user's shoulders, and a hip belt extending from a lower portion of the body-contact side of the bag portion to surround the user's hip bone. The hip belt is made of a left belt and a right belt connected by fastener, so that the hip belt is adjustable in its entire length or its angle of extension.

Abstract: A back bag such as a back pack, knapsack or a rucksack has a bottom-equipped bag portion, a pair of shoulder straps provided on the body-contact side of the bag portion and adapted to be hung from the user's shoulders, and a substantially V-shaped frame provided on the body-contact side of the bag portion. The frame has both wing portions extending from the lower end apex of the V-form located in a region near the lower end of the backbone of the user's body. The wings being elastically deformable independently of each other with respect to the lower end apex of the V-form of the frame. The weight load is distributed over the area of the user's back, as well as to the shoulders. The frame is plastically deformable in conformity with the geometry of the user's back, so that the bag portion is held in close contact with the user's back without jumping or slipping sideways during a long-distance walk or climbing.

Abstract: A garment comprising a main garment body having a sack or accommodation means on the back side thereof, and a covering normally packaged in the sack and adapted to be taken out of the sack and worn over the sack. The sack accommodating the covering is provided on the back of the main garment body. The opening and closing of the sack can be easily done by the user, so that the user may take the covering out of the sack to put it on or take off the covering and put it back in the sack as required.

Abstract: A sleeping bag device has a heat-retaining bag which defines an inner chamber for accommodating the user's body and having a head opening serving as an entrance/exit. The device also has an elastic member or members which compress the warmth-retaining bag in such a manner as to reduce the cross-sectional area of the inner chamber, thus allowing the bag to closely fit around the user's body.