Both swimsuits have a drawstring and elasticized waistband for a perfect fit. They are made with a lightweight, 4 way stretch fabric. Men's swimsuits have a 7" inseam, contain 2 mesh pockets, and are lined with a spandex brief. Baby boy swimsuits contain soft mesh briefs inside and are tailored, mid thigh cut. 91% Polyester, 9% Spandex