Maintaining a kid's wardrobe can be an all-hands-on-deck task. Luckily, you've got these board shorts for countless plunges in the pool and daily trips to the washing machine. 100% recycled polyester UPF 50+ protection Dolphin hem, slightly shorter than our trunks Inner knit brief lining Fabric: 100% recycled polyester with a knit boxer brief lining and UPF 50+ protection. Feel: Lightweight, crisp, and extra durable. Fit: Pull-on elastic waist with functional drawstring for adjustable fit.