Hooking-up device

In a fabric fastener having first and second woven support members formed of weft and warp including raised elements of complementary geometrical configuration adapted for interpenetration therebetween whereby said support members are held in intimate relationship, the improvement comprising:

• a. a weft comprising a plurality of yarns,
• b. a warp comprising a plurality of yarns including
• 1. a ground warp comprising a plurality of yarns interwoven with said weft yarns,
• 2. a stuffer warp in at least one of said support members comprising a plurality of elastic yarns, and
• 3. a pile warp comprising a plurality of yarns interwoven with said weft and forming said raised elements, wherein at least one of said support members is stretchable over a range of up to at least twice its unstretched length in at least one axial direction thereof, and wherein the length of the yarns comprising the ground and pile warps interwoven within the support having the elastic stuffer warp is sufficient to provide means for permitting recoverable extensibility over said range while said support members are in intimate relationship without loss of interpenetration of said elements.