The additional lens for the Opsin goggles is a natural choice for a reserve lens, ideal for all-round use. Ideal to have as a spare in case of damage to your main lens, this lens ensures your vision remains clear across a broad range of conditions.Features:Complete UV Protection (UV 400):- The goggles give complete protection from harmful UVA and UVB rays.Anti-scratch treatment:- An anti-scratch treatment on the outer lens reduces the risk of surface damage for clearer vision.Ri-Pel:- The Ri-Pel hydrophobic and oleophobic treatment protects from dirt, water, sweat, salt, oil and dust, and also makes the lenses easier to clean so your vision is always clear.