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 GB1810ST V2G SB7010SDT I-FORCE – CLEAR LENS S0601X SEISMIC LCT-100 – LENS CLEANING TOWELETTES