Manshape&reg; MagiCotton Gynecomastia Chest Binding Tank CottonNylonSpandex Sizes: Measure Chest: Small 32-35 / Medium 36-39 / Large 40-43 / X-large 44-47 / 2X 47-51 / 3X 52-55 Unique High Quality Proprietary MagiCotton Fabric offering very firm compression in the Chest and Upper Back Relaxed Mid-Section and Lower Back Quality Construction - Made in the USA White or Black