Size: Measure the circumference around your child"s elbow, in inches. Size XS fits elbows 4"- 6" and is designed for babies and infants.PLEASE NOTE: Size XS is for babies and newborns while size S is for toddlers.Goal: This pediatric arm restraint and immobilizer wrap prevents your child"s elbows from flexing. Made of comfortable, latex-free medical-grade foam that"s soft on the skin.Uses: Use as an arm restraint to prevent contact with the face or mouth after cleft palate repair surgery, to stop thumb sucking in children with special needs, or to prevent IV tubes from being pulled out during IV therapy.Help with Treatment: Use as an elbow splint to immobilize or stabilize a child"s elbow after an injury, sprain, fracture, or surgery. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.