This polyester strap bracelet comes in size small and large. Size small is meant for small children with a wrist size of 4 - 5.5 inches. Large is for kids and adults with a wrist size of 5 to 7 inches. The snap-lock clasp keeps the bracelet secure on an active childs wrist. It adjusts to size with the extra length tucking under the inside of the strap and touching the wrist. This product features an engravable medical ID tag. If you select back engraving, we will engrave the words SEE OTHER SIDE on the top front. You can also select the strap by itself and choose from other medical ID tags to go with it from another page on our site.