The patent-pending phaenom strap provides rebound, shock absorption and exceptional flex control from a single recyclable material. Included in this set are all of the necessary screws, buckles, straps and T-nuts for proper and easy attachment to the boot. (Parts are included for two boots.) While the phaenom strap set M comes installed on all stock phaenom boots ranging in size from 24-28, the phaenom strap set S is slightly thinner and shorter and comes installed on stock phaenom boots in size 23 and smaller.