Biker Compression Shorts for Men: The mens compression shorts with phone pocket are made of PolyesterSpandex, lightweight, cool dry, elastic, breathable. Elasticity fabric enhances range of motion with max comfort and breathable. Mens summer men shorts athletic, athletic shorts men, running underwear for men for all kinds of sports. 4-Way StretchMuscle Support: As the most important part of athletic body men workout, the durable wide waitsband prevents falling off from pose to pose. The running shorts waistband is very elastic and has good fit. It can fit your waist perfectly and can move freely without slipping. Compression fabric provide muscle support and increase the oxygen around legs, reduce lactic acid in muscles and promote blood circulation, protect your legs from injury and reduce fatigue and ache of muscles. Flat Seam Phone Pockets: The men compression underwear with flat seam design fits your skin, which can reduce friction during exercise, and comfortable. athletic shorts for men is large enough to hold your smartphone, credit card and key. The pocket is very tight, will not slide out during athletic. Most importantly, you can ensure that your items are not lost while avoiding scratching your phone.