95% Cotton ?Made of 95% cotton 5% spandex, breathable, comfortable and absorb sweat. Perfect for your baby’s sensitive skin, machine washable. ?Cute animal mermaid tail and floral design, looks great on both boys and girls. It’s so Great for a baby shower gift or Christmas gift. ?The wearable blanket will never be kicked off so baby can stay warm all night and easy for diaper changing. ?The baby sleeping bag can used as baby photography props, baby pajamas, baby swaddle wrap blanket baby sleeper gowns, pajamas and etc. ?Size: Small (0-12Months), Medium (12-24 Months). Sizes detail shows at the description.