Avalanche | Shoes | Avalanche Mens Black Outdoor Boots 。Avalanche Outdoor Men\'s Hiking Boots Size 10 Style# AV877653 Avalanche Men\'s Hiking Boots . These shoes are designed for outdoor hiking and are described as durable, comfortable, and versatile for a daily lifestyle. They are made with materials to keep feet safe and warm during outdoor excursions. * The upper material is often described as synthetic or 80% polyester. * The outsole is commonly made from a blend of materials, such as 80% polyurethane and 20% rubber, or synthetic rubber. * The insole and lining are frequently made from polyester or polyurethane.