Ergodyne® Trex™ Ice Traction Device, Adjustable, Series: Ice Traction 6304, Unisex, M, Carbon Steel/Stretchable Rubber, Black, For Use With: Wraps Boots and Shoe. Ergodyne® Trex™ 16783 6304 Step-In Ice Cleat, Unisex, M, Carbon Steel/Stretchable Rubber, Black, For Use with Wraps Boots and Shoe