Columbia Men's Daska Pass Omni-Tech Hiking Boot 100% Leather and synthetic Vibram sole A gusseted tongue keeps out debris and the EVA Contour Comfort 3D insole with AgION anti-odor treatment provides three levels of cushioning and support but is removable for replacement with custom insoles. Durable hooks and D-rings rising on the last of the traditionally cut boot lock laces and the foot in place providing extra support for the ankles against torsion and is enhanced by an injection molded full length lasting board. Non-marking Vibram Trek rubber compound outsoles have an aggressive tread pattern provide excellent grip and traction on rock and trail surfaces, and durability for long lasting wear. Boot upper is made from nubuck with high abrasion synthetic overlays and reinforced with a scratch toecap provides comfort and Omni-Tech waterproofing is Guaranteed to provide a dry environment.