Abstract: An assisting device for waist part 1 has a waist part mounting portion 2 to be mounted to the waist part W of a user; a lower limb mounting portion 3 to be mounted to a part of a lower limb L1, L2 of the user; a hard frame 4 extending between the waist part mounting portion 2 and the lower limb mounting portion 3; and an elastic body 5 extending from the waist part mounting portion 2 toward the lower limb mounting portion 3 on a back side of the user.

Abstract: A bottom wear is described which has a cylindrical part on the back part of a waist-encircling section and inside the bottom wear and in which a protection band for lumbago can be attached to a bottom wear such as work trousers suitable for use with a protection band for lumbago for tightening a waist of a wearer. The bottom wear allows the wearer to quickly complete work for attaching the protection band for lumbago to the cylindrical part. One slit is present at the substantially central part of the front portion of the cylindrical part, wherein the slit is disposed in such a manner that the longitudinal direction is substantially parallel to the wearer's stature direction.

Abstract: The purpose of the present invention is to provide a bottom wear capable of suppressing a situation in which an underwear worn by a wearer is slid in a wearer's stature direction with respect to the wearer's waist portion. The means for achieving the purpose is a bottom wear including a waist-encircling section, wherein a cylindrical part including a cloth of bottom wear and a planar material different from the cloth, or a cylindrical part including a planar material different from the cloth of bottom wear is present at a back portion of the waist-encircling section and inside the bottom wear, the cylindrical part is disposed in such a manner that the axis direction of the cylindrical part is substantially parallel to the waist-encircling direction of the waist-encircling section, the static friction coefficient of the inner surface of a rear portion of the cylindrical part is 0.2 or more and 1.