Corresponding Velcro???, also known as hook and loop material, fasteners (42) which interact with the Velcro???, also known as hook and loop material, strip (40) are secured to the surface of the frontal end portion (22) and the front portion (16) by conventional securing methods, such as adhesives, to permit the Velcro???, also known as hook and loop material, strip (40) when encountering the Vel