BIOSPHERE is a frameless design that features a large 10 base lens, providing ultimate eye coverage for extra protection, and is made with metal-free lightweight materials. The flexible soft PVC nose bridge provides slip-resistance with a comfortable fit, and flexible co-moulded rubber temples offer a pressure-free and secure fit. Large 10 base curve lens. Ultra light-weight frame. Non slip adjustable PVC nose bridge. Co-moulded flexible and pressure free temples. Dielectric frame contains no metal parts. Weight / 28 grams. AS/NZS 1337.1 : 2010