Easily cut to size to fit wrist sizes 5.75" - 9.25" (with clasp installed). Sizing Instructions Included. Replacement Band Dimensions: 9.0" (22.8mm) L x 0.71" (18mm) W x .098" (2.5mm) D Easy replacement - simply unclip the clasp and slide into place Fits our 35mm or 45mm long engraved stainless steel plate. This plate will slide into place. Includes embossed international Star of Life Medical Alert Symbol Replacement Bands for our Sport Series Medical Alert Bracelets. These bands are made from waterproof hypoallergenic silicone and now available in 8 popular colors. Note that this replacement band DOES NOT include the engraved plate which is sold separately.