MAGNETIC TYPE: As the magnet is attached to the dog goggles’ lenses and optical frames, it is easy to detach and assemble the lenses. We suggest that the dog should wear the optical frames first. After the dog adapts to the way it wears the goggles, the lens can be put into the frames. Hence, it can prevent the lens from scratching and it can maintain hygiene. COMFORTABLE TO WEAR: Our dog goggles are separately formed by uvioresistant PC lens and soft TPU optical frames. The edges of the optical frames are covered with a circle of rubber and plastic cotton, which allows your dog to wear the goggles more comfortably. All in all, these materials are proven to be lightweight, soft and durable. ADJUSTABLE STRAP: The strap of the dog goggles turns out to be elastic and flexible, so the length can be adjusted according to your dog’s size. In particular, it is suitable for large breed dogs. The head strap and the chin strap enable your dog to wear the goggles more firmly because the three-way strap is not easy to fall off.