No size tag. Confirmed it's mens size 11.Allbirds SWT Hiking Trail Running Sneakers are perfect for men who love outdoor activities. These sneakers are designed to provide comfort and support to your feet. They are made of high-quality materials, including knit wool, rubber, and fabric. The sneakers are lightweight, cushioned, and breathable, making them ideal for gym and training, walking, hiking, running, and jogging. The lace-up closure ensures that your feet are secure and comfortable. The solid black color is perfect for any activewear or casual outfit.