GB4010 XSG Description Description Plain & Bi-Focal out of direct vision options avaliable Flame resistant foam padding Seal keeps out dust and airborne particles Interchangeable temples and strap Bi-focal version comes in strengths 1.5, 2 & 2.5 Related products GB1820ST V2G GB1810ST V2G S0601X SEISMIC GB6420 V2G-XP