This is a sleeveless type that allows for easy arm movement. The stretchy ribbed knit is perfect for active children. The crotch area has snap button closures for easy diaper changes. [Recommended season for wearing] Spring/Summer season [Transparency] Not transparent [Fabric thickness] Normal [Elasticity] Yes [Lining] None [Pockets] None Please only purchase if you understand that this is a home-stored item.