This all-in-one will be a gorgeous addition to your baby boy's wardrobe this season. It has all the practicality and comfort new parents look for in their little one's clothing, as well as a mock waistcoat to give it that unique, quirky look - perfect as a new baby gift or simply just treating baby to great everyday wear! What We Love. 100% Cotton. Full nickel-free front popper fastening. Mock waistcoat layer. Contrasting feet and trims.