CHEERFUL DESIGN: An up to date baby boy swimwear so your little angel rocks his look using our baby trunks. These baby surf clothes were designed with drawstrings to adapt. The fabrics will maintain the colors and prints and endure the sun's harshness. From size 12 month old boy swim suit - baby boy swim trunks 6 months - toddler boy swimwear 18 months - swim suits 2t boys and 3T.