A diaper fastener is provided of the type having a substantially planar elastically extensible base member and three spaced hook units that have teeth operable to engage the fabric of a diaper in relevant zones thereof with the elastically extensible part stretched and operative to maintain the teeth in engagement with the diaper fabric to hold the diaper in its functional position. At least one of the hook units and generally all three are each composed of two parts that are permanently clipped together from opposite sides of the base member by inter-engaging formations. One of the parts has the hook teeth formed integral therewith and the two parts co-operate with the base member to physically locate the hook unit on the base member. Preferably, each hook unit is carried by an arm forming part of the planar base. Each hook unit has a hook part and a clamping part.
