Color: as shown in the picture Packaging: Plastic box Features: Professional racing anti-fog swimming goggles Suitable for the crowd: regardless of gender Material: Lenses --- Polycarbonate Mirror ring --- silicone rubber Nose buckle---polyurethane Headband --- Silicone Rubber Edge buckle---polycarbonate 1) Competitive model: The smaller mirror surface can reduce the resistance of water flow, making it suitable for competitors. The general swimming goggles are mostly "eye socket type" or "eye socket type streamlined" swimming goggles. The eye socket type swimming goggles are worn in the upper eye socket, and the range is relatively small. Due to the small range and resistance, such swimming goggles are less likely to leak. Players generally use such swimming goggles in order to pursue speed and performance. 2) Casual style: The mirror surface is larger and the field of view is wider, suitable for sports and leisure people, and it is more comfortable to wear. Generally, it is the style with the bandwidth of the mirror. Swimming goggles are characterized by: 1. Competition type, the frame is small, which can effectively reduce the resistance to the water (buyers who do not swim often, please choose a larger frame, some people will feel that the small frame is too eye-sucking and uncomfortable) 2. The rubber pad and mirror frame are attached together and will not fall off. 4. There are three nose buckle sizes (large, medium and small) to choose from 5. Professional swimming goggles with small frames are mainly used for competition training and swimming, and can be used by adults and children.