2 in 1 Swim Trunks---these compression lined swim trunks are built to prevent friction, painful skin irritations and help you improve your performance by reducing muscle fatigue and soreness. These compression lined swimsuits trunks will increase your mobility and don' t move around when you' re constantly moving and keeping active to enhance comfort. Fabric features with 4 way stretch, quick dry, lightweight, UPF50+ silky touching and good construction.