PROBLEM TO BE SOLVED: To facilitate putting-on/taking-off of underpants while wearing a lower garment such as pants, to allow fixability to be easily improved, and to widen the range of target users, by changing a joining method of a hook-and-loop fastener part of the underpants with a hook-and-loop fastener.SOLUTION: The pair of underpants has a shape wherein the front part of the underpants are easy to pass through between legs by making the size of the front part compact and wherein the back part of the underpants is easy to be pulled to the front of a body. By joining a hook-and-loop fastener of the back part in the abdominal region front in a truncated chevron shape or an inverted V-shape, a situation in which the hook-and-loop fastener part is pressed to the waist causing irritation or in which the hook-and-loop fastener part is caught under the body making underpants change difficult is avoided. Assembly can be stably performed in front of the body, so that the assembly is facilitated. Right and left upper joining parts can be fixed by a fastening device, assembling methods are increased, and it is possible to change only a pad.COPYRIGHT: (C)2012,JPO&INPIT【課題】 面ファスナー付パンツの面ファスナー部の接合法を変え、ズボンなどの下衣をはいたままのパンツの着脱を簡便にし、固定性を向上させやすくし、使用対象者を広げる。【解決手段】 前みごろをコンパクトにすることで足の間が通しやすく後みごろが長いことで体の前面に引き寄せやすい形状を有するパンツ。後みごろの面ファスナーを下腹部前面でハの字または逆Vの字に接合する事によって面ファスナー部が腰に押し付けられ刺激を受けたり、面ファスナー部が体の下に巻き込まれることによって交換が困難になるといった状況を回避する。組み立てを体の前面で安定して行える事で組み立てを簡便にする。また、左右の上部接合部を固定具で固定することも可能にし、組み立ての方法を増やすとともにパットのみの交換も可能にする。【選択図】図1