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The REI Adventure dog boots help protect your pup's paws from ice, hot sand, rocks, thorns, broken glass and other rough terrain. Strong, flexible Reprotek(R) recycled tire rubber soles and toes offer long wear and great traction in wet or dry conditions. Boots secure around the legs with adjustable rip-and-stick closures. Durable 500-denier Cordura(R) nylon uppers flex with each step for comfort. Adventure Dog Boots secure around the ankles below your dog's carpal pads; the boots should leave room in the paw area, allowing the paw to spread when bearing weight. Note: keep your dogs nails trimmed to extend the life of the boots.