Nylon performance fabric Nylon performance fabric with 4-way stretch Lightweight, super soft, smooth, stretchy Sweat-wicking engineered not to shrink Works better as a going out top Racer back gives maximum freedom of movemen Removable cups for extra coverage Not your ordinary Sports Bra! Wear alone or as a layer The pull-on garment with the stretch bottom band for a secure fit Surprised how supportive this is The sport bras are suitable for Sports, Gym Exercise & Fitness, Yoga, Walking & jogging & Running, Cycling, Boxing, Bowling, Tenis and other Exercise of Moderate Intensity. What is the difference between the two different white's? The shoulder is on the left side or right side. You can pick your favorite match. What does black-02 mean and black-03? The shoulder strap of the black-02 is on the right, it's a right one shoulder sports bra. and the black-03 is a ribbed left one shoulder sports bra. Will this roll up while bending over doing yoga poses? The material does not roll. Are they better for light workouts? They stay in place even when running high knees. I mainly do yoga fitness, core trimming with high intensity interval training. BEST WORKOUT SETS One Shoulder Sports Bras One Shoulder Sports Bras Ribble Sports Bras Zipper-Front Sports Bra Post-Surgery Bra Material 88% Nylon, 12% Spandex 88% Nylon, 12% Spandex 88% Nylon, 12% Spandex 75% Nylon, 25% Spandex 75% Nylon, 25% Spandex Shoulder Side Left Left Right Wide & double layer straps Wide & double layer straps Size S-XXL S-XXL S-XXL S-XXL S-XXL Ribble Suggest For Workout Workout Workout Post-Surgery Post-Surgery