These are men's smalls and I wear them they fit perfectly. I'm usually an extra small or small. These will fit up to a medium because they're very stretchy. • Soft Rib Knit Fabric • Moisture Wicking • Assorted Colors May Vary • Tag Free Description Fruit of the Loom Men's Classic White Tanks are comfortable and versatile as an every day undershirt. They are made with super-soft, 100% cotton ribbed fabric, providing a cool and comfortable fit that forms to your shape. These a-shirts have generous length that stay tucked in all day and keep you comfortable in every situation. These sleeveless undershirts are comfortable and light enough to be worn as an extra layer without adding extra warmth to an outfit. Each undershirt wicks away moisture so you can stay cool and dry.