LiaBella Women's Seamless Stretch Spandex Exercise Bike Shorts (One Size, 2 pack black) 92% nylon 2 PACK 92% Nylon, 8% Spandex Elastic banded hem and waistband keep fabric from riding Lightweight, stretch material is great for light workouts like yoga Soft, comfortable microfiber Spandex blend keeps shape and color throughout washes