One pack comes with 3 leg bands. These are great to have on hand if you hatch eggs. Sometimes chicks are born with splay or spraddle legs. It's important to hobble their legs with bands immediately after hatch in order to repair. 
 
HOBBLE YOUR BABY CHICK: Many newly hatched chicks has the splayed leg problems. With the Leg Hobbles could help to support the legs in a natural position, until the legs be strongly enough to support the chick without the need of brace. 
CORRECTION FOR SPLAYED LEGS: The Hobble braces can help newly hatched chicks’ legs from departing too far, prevent twisting their hip, and repair the deformed ligaments and bones, keeping the legs and feet in the right position. 
FIT FOR NEWLY HATCHED CHICK: The leg hobbles could be effective for 1 to 3 days hatched chicks and usually correct Splayed Leg within 4 to 6 days of treatment in a newly hatched chick. 
BE CARE AND GENTLE: Carefully to place the elastic band over the chick's each leg. And separate the chick from the others, provide a warm and secure box with food and a towel in the bottom for at least 24 hours, remove and reapply the hobbles every 24 hours. 
WATCH CLOSELY: Baby chicks grow quickly and chicks will adjust to the new way of walking. If the chick seems to be walking pretty correctly, remove the hobble. Watch closely for a few days, and put the hobbles back on if chick needs help again.