Designed for active, hard charging dogs when extra sole protection is needed. This boot has a recycled tire sole, about 50% thicker than the Durable dog boots, but is flexible and rugged. This is the boot for hunters, urban settings, on asphalt or concrete, snow, and protection from salt in the winter. Available in red, black, or orange, in four sizes. The side seams expand, making it easy to put on the boot. Two Velcro straps with slides fasten the boots in place and cover foam pads that cushion the paw, and create a secure grip. These boots are guaranteed to stay on when properly sized and periodically tightened. The boot is made of water resistant nylon, the toe is wrapped in PVC, and the sole is recycled tire. To extend the life of the boots apply Shoe Goo or a similar product to patch small holes in the sole that can appear with wear. Some users will pre apply Shoe goo in extreme situations. To clean the boots loosely fasten Velcro closure, wash in cold water delicate cycle; hang to air dry.