From Knix: Our most supportive sports bra ever. And one that doesn’t give you the dreaded uni-boob. Keeping you in place while you move, this bra reduces overall breast movement by 76% (During treadmill running; based on University of Portsmouth Research Group in Breast Health study, 2018). Size 6 (refer to chart in photos) How It Fits - Easy on & off - High impact support - Encapsulated cups to reduce movement - Adjustable back straps - Ventilated cups - Hook & eye back clasps The fabric is designed to feel snug at first but relaxes with wash and wear for a perfect fit. Machine Washable: Wash with like colors. Machine wash cold with mild detergent on delicate, do not bleach, do not dry clean, do not iron, lay flat to dry. Help your bras last even longer with this handy wash bag. Body: 59% Nylon, 41% Spandex Lining: 86% Nylon, 14% Spandex New With Tags (NWT). Never worn. Pet-free and smoke-free home.