Women's Dry Fit Sport Athletic Compression Long Sleeve T Shirt 85% Polyester / 15% spandex, Machine Washable Pull On closure US Size, Please kindly refer to our suggested chest and the actual measurement, rather than follow the Amazon's "Size Chart" Ergonomic compression fit for enhanced range of motion; Flat lock seams to prevent chafing, Lightweight provides comfortable feeling against skin Suitable for all sports indoors and outdoors, such as: yoga, running, basketball ,cross training and etc Breathable, Quick-drying, Multi-purpose, Soft, Elastic and moisture-wicking fabrics keep you dry and comfortable Elastic cuffs plus thumb holes protect hands full coverage