This replacement sole is for the Dexter SST THE 9 Only. These will not work on any other SST Shoes. This sole has an interlocking Toe Hold System. The toe hold clip on the interchangeable sole secures to the shoe by a recessed track. A highly abrasion resistant toe material on the interchangeable sole prevents peel-back and helps prolong wear. X-Small Mens Sizes 5-6 1/2,Small Mens Sizes 7-8 1/2,Medium Mens Sizes 9-10.5,Large Mens Sizes 11-12,X-Large Mens Sizes 13-15