100% Polyester Drawstring closure Machine Wash Quality bathing suit: Made from durable and machine washable polyester; high-quality fabric resists damage from chlorine and dries quickly; these boys swim shorts also provide UPF 50 sun protection Design features: The elastic waistband on this boys swimsuit has lots of stretch; 7 inch inseam; drawstring can be tightened and loosened as needed; includes a faux fly and a comfortable mesh liner for extra support Style options: Pair these kids swimshorts with a matching rash guards for boys to keep him safe from the sun; add a bucket hat and a body board; these swim trunks are also nice with a cotton tee Fit: Liner ensures added comfort; stretchy waistband can accommodate a modest growth spurt; offered in regular boy and slim sizes; features a drawstring that can be tightened and loosed for the perfect fit Versatile: He can wear these boys swim shorts while splashing in the surf or the pool; great for swimming lessons and helping you wash the car; add a rash guard to prevent sunburn when playing outside