Underworks Mens Extreme Gynecomastia Chest Binder Vest 3-Pack 70% Nylon / 30% Spandex Sizes: Measure Chest in Inches: Small 32-35 / Medium 36-39 / Large 40-44 / X-large 45-48 / 2X 49-52 / 3X 53-56 Extreme Compression for Gynecomastia Double Strong Panels for chest and mid-section compression Made in USA No bulky shoulder Velcro closures Designed with two layers of powerful compression so its strong enough to be used as a stage 1 post-surgical garment or in controlling gynecomastia. Manufactured from a medical-grade blend of 30% spandex and 70% nylon for consistent compression levels. A double row hook and eye closure secures the garment and allows for a small amount of adjustment while making it easier to don and remove. Manufactured in our USA factory Pre and Post Surgical Gynecomastia Vest Powerful and adjustable Undetectable under clothing