AK products DEVA Waterproof Socks M size (24.5~25.5cm) Used only once. I usually wear 25cm leather shoes and 26 to 26.5cm sneakers. Excerpt from the product description: The "AK products DEVA" waterproof socks are boot liners made with a thick and durable outer fabric and a Gore-Tex membrane. These fully waterproof Gore-Tex socks can be worn barefoot or over socks. They completely prevent wet feet. Let's take a closer look at the "AK products DEVA" waterproof socks, which provide comfortable wear even in times of disaster. Introducing the "AK products DEVA" waterproof socks model: The "AK products DEVA" waterproof socks can be expected to perform even in the worst environmental conditions. Based on commercially available boot liners, the sewing and cutting have been adjusted to achieve a very good fit that doesn't cause stress on the feet. Recommended for those who undertake special missions. Main uses include disaster preparedness, fishing, motorcycling, and leisure activities such as skiing. Of course, they can also be used for commuting in heavy rain or typhoons.