Silicone rubber is a durable material that requires special handling to attach because it is resistant to heat. Silicone rubber bracelets imprinted with logos and words of encouragement (such as "LiveStrong") are popular among children and teens. Silicone bracelets are made in standard adult and youth sizes that may be loose for many. Bracelets can be sized to accommodate small wrists and adjusted to meet growing bodies. Re-sized bracelets can be attached with yarn or secured with a jewelry clasp.

Wrap a length of yarn snugly around the wrist. Cut the yarn to get a measured wrist length.

Place the yarn around the outside of the silicone bracelet and mark the ends of yarn on the bracelet.

Cut the bracelet about 1/4 inch from the marks.

Thread an embroidery needle with yarn.

Poke one hole through one end of the silicone bracelet, at least 1/4 inch from the end, and pull the yarn through the hole.

Measure and cut 1 1/2 inches of double-stranded yarn from the end of the bracelet and tie a knot to keep the strands together.

Repeat Steps 2 and 3 on the other end of the bracelet.

Place the bracelet on the wrist. Secure the bracelet by tying the strands of yarn together.

Thread an embroidery needle with yarn.

Poke a hole 1/4 inch from one end of the bracelet and pull the yarn through.

Cut the double-stranded yarn approximately 1/2 inch from the end of the bracelet.

Enclose the two strands of yarn with a cord crimp positioned near the end of the bracelet. Squeeze the crimp closed over the two strands with needle-nose pliers.

Repeat Steps 2 through 4 with the other end of the bracelet.

Attach the clasp to the loop of one cord crimp and squeeze the open ring closed (with the needle-nose pliers).

Place the bracelet on the wrist and secure by attaching the clasp to the loop of the second cord crimp.