●polyester ●Imported ●Material: Made of polyester, no need to inflate before swimming, just jump into the water after wearing. ●Size: Design for kids from 30lbs-50lbs. ●Safety: Swim vest with armbands safely keeps kids heads and arms above the water while learning to swim. ●Feel Comfort: The proper size and comfortable soft fabric provide more pleasure while playing ●Guarantee: You will get the full refund if you are not satisfied.