The Men’s Sweat Block Undershirt is a white V-neck T-shirt made of polyester, designed to block underarm sweat with a solid pattern and short sleeves. It is machine washable and features a breathable material, making it suitable for all seasons. This basic tee from Hanes is available in size Small (34-36) and is perfect for men looking for a comfortable and stylish undergarment to help manage sweat and odor.