Clasp has 2 set screws to give a more reliable hold than just a clasp alone; Constructed using stainless steel set screws and not pins like cheap others; Buckle size: 1 7/8" x 3"; Nylon strap is made from a super-high density microfiber material; Strap backing is sweat resistant; Fits up to 67" waist; Strap thickness: 3/16"; Strap width: 1 1/2"