Sculpted for performance, our Sweetheart Back Biker Shorts blend durable nylon Lycra, 4-way stretch, and silicone gripper elastic. Seam-free outseams, back waistband phone pocket, and front pocket for keys, cards, or headphones ensure seamless high-intensity comfort. Ericka, is 5'8", a size 4, and is wearing an S 76% nylon 24% lycra Four-way stretch