Shorts fabric: 100% polyester , swim trunks with a silky smooth flat-angle compression lining, light weight high-performance and water repellent for quick-drying, more comfortable and supportive for all day wear 2 in 1 Swim trunks: suiable for boys plan to ball sports, go swimming or go to the gym, running, walk, family picnic, beach surfing, enjoying beach hangouts and etc Neat stitches and professional cut can show your muscle lines and figure. Mesh breathable fabric panels ensure you get extra ventilation, perfect for basketball and training, cozy enough as loungewear.