Walking Assistants helps baby learn to walk balancing more naturally, hands free, and experiencing fewer falls. This unique vest easily fastens around the chest of the baby, is padded for comfort and straps are adjustable to your height. It's healthier for baby's shoulders and kinder on parent's back. No more bending over. Walking Wings is based on average chest sizes of children 6 months to 4 years old. Vest fits 19 to 26" chest circumferences. Walking Wings is 100% cotton, machine washable, and dryer safe. Walking Wings is recommended for ages 6 months and up.