These trunks are comfortable and breathable for all kinds of day-to-day activities. The fabric combines the comfort and softness of cotton with breathable Nike Dri-FIT Technology to wick away sweat and quickly dry. Made from 95 percent cotton and 5 percent elastane, they have a bit of stretch to move with you. And the wide hems help keep the fabric around the legs in place, mitigating the possibility of scrunching.