PROBLEM TO BE SOLVED: To provide a diaper for a low-weight infant, hardly stimulating the skin of a low-weight infant, and smoothly replaceable.SOLUTION: In a diaper (1) for a low-weight infant which comprises an absorber (2), an exterior sheet (5) and a pair of belt members (20), the belt member (20) has locking members (22) at one side and the other side in the longitudinal direction, and can be locked to a non-skin side of the exterior sheet (5) by the locking members (22). A mark (30) for showing a locking position of the belt member (20) at the non-skin side of the exterior sheet (5) is provided, and the mark (30) is visible from the non-skin side of the exterior sheet (5).SELECTED DRAWING: Figure 4COPYRIGHT: (C)2019,JPO&INPIT【課題】低体重児の肌を刺激しにくく、かつ、スムーズに交換可能な低体重児用おむつを提供すること。【解決手段】吸収体（２）と外装シート（５）と一対のベルト部材（２０）とを有し、ベルト部材（２０）は、その長手方向の一方側及び他方側に係止部材（２２）を備え、係止部材（２２）によって外装シート（５）の非肌側面に係止可能である低体重児用おむつ（１）であって、外装シート（５）の非肌側面におけるベルト部材（２０）の係止位置を示す目印（３０）を有しており、目印（３０）は、外装シート（５）の非肌側面から視認可能であること。【選択図】図４
