This Beach Short with Quick Dry fabric : keep you Dry and Flexible workout, lightweight and Efficient Breathable.elastic waistband with drawstring can be used freely adjustable tightness according your waist ,drawcord can be adjusted to the right fit,the opening on the side of the thigh allows you to exercise easily.This Swim Trunks training shorts design with the ultra soft and comfortable triangle mesh lining to make you wearing more comfortable.