Crowell Reef Navy Blue Swimming Goggles Properties: Crowell swimming goggles will allow you to start your training with the right preparation. The lenses are connected to each other by a flexible bridge. Split silicone strap with adjustable strap. Anti-Fog coating protects the lenses against fogging. The glasses are made of polycarbonate, which has increased resistance to all types of damage and scratches. Built-in UV filter. Reusable plastic box included. Material: PC polycarbonate, silicone;Crowell Reef Blue Swimming Goggles Properties: Crowell swimming goggles will allow you to start your training with the right preparation. The lenses are connected to each other by a flexible bridge. Split silicone strap with adjustable strap. Anti-Fog coating protects the lenses against fogging. The glasses are made of polycarbonate, which has increased resistance to all types of damage and scratches. Built-in UV filter. Reusable plastic box included. Material: PC polycarbonate, silicone