How to use: Just slip your feet into the boots and use the Boa®M4 Fit System to adjust the fit to your liking. It's quick and easy. When you're going out on different terrains, you can change the soles to get the best traction. Remember, these boots are great for ice fishing and snowmobiling. Attention: Avoid exposing the boots to sharp objects that could damage the leather or the sole. Don't machine - wash them, as it might affect the waterproofing and insulation. Maintenance: After using them in the snow or mud, wipe them clean with a damp cloth. Let them dry naturally at room temperature. If the soles are worn out, you can easily replace them according to the instructions.