The torankusu type diaper which relates to this invention the case where the diaper is installed is superior in the installation impression in regard to around the leg left and right, removal and re-installation is easy, to designate the offer of the diaper whose anti characteristic is high as purpose, the elastic member around 1st (15a), the left edge of the front body (7a1) from the crotch between section (6) passing the leading edge, the right edge of the front body (7b1) to distribution facilities be almost done in rectilinear condition in the development state of the diaper, the elastic member around 2nd (15b), the left edge of the back body (7a2) from the crotch between section (6)Passing the trailing edge, the right edge of the back body (7b2) to distribution facilities it is almost done in rectilinear condition. The elastic member around 1st and 2nd, the left and right leg open part (5a and 5b) distribution facilities is done when it is surrounded as pair the above-mentioned result, the front and back body (2 and 3) the left and right edge (7a1, 7b1, 7a2 and 7b2) in the base of the diaper of a state where it is connected.本発明に係るトランクス型おむつは、おむつを装着した際の左右の脚回りに関して、装着感に優れ、脱着が容易で、防漏性の高いおむつの提供を目的とし、おむつの展開状態において、第1脚回り弾性部材(15a)は、前身頃の左縁(7a1)から股間部(6)前縁を経て前身頃の右縁(7b1)までほぼ直線状に配設され、第2脚回り弾性部材(15b)も、後身頃の左縁(7a2)から股間部(6)後縁を経て後身頃の右縁(7b2)までほぼ直線状に配設される。上記の結果、前後身頃(2、3)の左右縁(7a1、7b1、7a2、7b2)を接合した状態のおむつの底面において、第1及び第2脚回り弾性部材が、左右脚開口部(5a、5b)を一対として囲んだ状態で配設される。
