Very good goggles for leisure, training and competitions! · Hydrodynamic shape for low water resistance · Very large silicone contact area · Seal material: Softeril ® anti-allergic, soft, comfortable, shape retention and insensitive to temperature changes · Mask body and mask bracelets of anti allergic silicone · The lens made of Plexisol ® (extremely good transparency), only 1/10 of the weight of glass, but 20 times stronger - · The lens is protected from scratches on the outside and from fogging on the inside · 100% UV protection (UV-A + UV-B) · Resistant to salt water Comes in a handy hard box