RIKKI Women's High Waist Thigh Slimming Bike Fitness Running Shorts 87% Nylon/13% Spandex 84% POLYESTER,16% POLYURETHANE Suitable for workout, increased blood circulation, muscle support, reduced muscle fatigue, faster healing muscles, reduced risk of delayed onset muscle soreness. Nice pants for Yoga, Running, Workout, fitness etc. Compression fit athletic shorts. Light weight and soft