Small dog sunglasses fit Shih tzus, Chihuahua, Yorkie, Schnauzer, Poodle or some few big cats for eye protection all year. Only 0.07lb, puppy goggles are lightweight, Height 1.5", Length 4.2". Head strap elastic ≤ 12", chin strap elastic ≤ 8.5", No tensile measurement, have enough adjustable for dog head. Suggest for 3 lbs-7 lbs dogs. Glasses frame made of PVC plastic, which is environmental , sturdiness and durable. Lens with UV Protection coating can protect your pet eyes from sun at any time. Foam padding around inside the goggles for comfort and skin-friendly. Spacious interior structure won't press against your dog eyes. Fully enclosed goggles would make pet eyes won’t get wind, dirt, sand damaged or whatever else may fly through the air. Adjustable flexible head and chin straps need to be adjusted and tightened to get the dog sunglasses snug face, if not, they easily move all over your dog snout and touch their eyes cause don't fit snug. These puppy goggles are great for sticking dog head out of the window while driving in the car, also for outdoor activities such as parties, photo booths, travel, daily use, and other outdoor activities. It also a great gift idea for holiday Halloween, Christmas, New Year.