Personalized Hippo 1st Birthday Baby Beanie Hat. Hippo 1st Birthday! I mean Happy 1st Birthday! A cute, smiling hippo wearing a birthday hat sits in front of a birthday cake ready to blow out the candle. Cute first birthday gift for the one year old! This Baby Cap is a soft and comfortable essential for keeping your little one cozy. Made from 100% combed ringspun cotton jersey, this lightweight and breathable cap is perfect for newborns and babies. Designed with stretchy fabric for a snug and secure fit, it provides gentle warmth without causing discomfort. The classic, simple design makes it an everyday must-have and a thoughtful baby shower gift. Available in a range of colors to complement any baby outfit.