Doggles ILS come in 5 sizes, to fit dogs 2 lbs - 200 lbs. The lenses are interchangeable, so yo can change color for time of the day or situation. Our products and designs are protected by three patents. We created these unique products to help dogs who need eye protection from the sun's harmful rays, flying debris, wind, rocks, or bugs. The deep lens cup keeps the lens away from the eye, preventing potentially dangerous rubbing or hitting of the eye. The lenses are shatterproof to protect from flying bugs, rocks, or other objects while riding in cars (head out the window), motorcycles, or properly secured in pickup trucks. Our Doggles are worn by working dogs all over the world: K9 Units, Border Patrol dogs, Search and Rescue, are just some of them. Doggles are recommended by Vet Ophthalmologists to protect their patients in all types of situations and also after some types of eye surgery. Dogs need UV protection just as humans do, and if your dog is out and about with you, and you have your sunglasses on, your dog should be wearing Doggles to protect its eyes from harmful UV rays as well. Your dog can't tell you his eyes hurt. Be proactive and help your dog help its own eyes. And don't forget that Doggles are in the height of fashion! Check out our pink and lilac colors!