Blood, sweat and tears.
Rain too.
On the path to perfection, you face all kinds of challenges. And your sunglasses, too. That's why these sports sunglasses with IPX4 water resistance were designed to withstand weather conditions. The polarized polycarbonate lenses are resistant to impacts and scratches. The TR-90 nylon frame is strong and durable. Additionally, specially designed acoustic mesh in the ports keeps water and dirt out.