17.0cm. Suitable for temperatures down to -34°C. These are useful to have, not only as snow boots for snowy days, but also as rain boots for year-round use. They perform well and are completely waterproof. Worn for one season. The name written on the inside of the shoes has been erased with a marker. (From the official website) BOGS cold-weather waterproof boots that can withstand temperatures from 21°C to -34°C. A brand originating from Portland, Oregon, USA. ・100% waterproof construction. ・7.5mm Neo-Tech upper provides durability and waterproofness, ensuring a comfortable fit. ・Suitable for temperatures from -34°C to 21°C, keeping you warm even in cold seasons, and wearable for three seasons. ・PFA-free material, environmentally friendly.