Jr. Cool Vest With Back-Attaching Belts, Youth Small/MediumBlack Jr. Cool Vest With Back Attaching Belts, Youth Small Medium, 0. 5 to 12 lb. Child's Weighted Vest (Supplied at 6 lbs. with 11 1 2 lb weights) The Jr. Cool Vest is designed with Back Attaching Belts to prevent unwanted removal. IRONWEAR also makes adult Cool Vest models so that the parent or caregiver can wear a similar looking vest to help the child accept wearing the vest. As an added benefit, when the parent caregiver wears a vest as well,