Touch tape brand 1.5" wide hook and loop closure.  Made from 100% nylon and able to withstand the harsh washing diapers endure.  Available in several colors to make diaper making fun!

This is sold by the inch.  For a large diaper from the Celtic Cloths pattern you will need 8" of loop and 3" of hook.  Please note this if for the LOOP part only, you will need to order hook separate.