Medium V2 Rex SpecsRex Specs Goggles provide stable, secure eye protection for your dog. Rex Specs are used by professional working dogs deploying from helicopters, simple sunny day strollers, bird flushing hunting dogs and motorcycle riding pup alike. Wherever and whatever your adventure is, Rex Specs have your dog covered. Product Details: Lenses are replaceable and interchangeable. All lens, including the clear lenses, provide UVA UVB protection, blocking 99. 9% of