These authentic Montana Collection By SBG MP94 Alan Polarized polarized sunglasses have Gunmetal Grey Metal frames and are available online for a discounted price at SmartBuyGlasses. Montana Collection By SBG sunglasses are the perfect way to shield eyes from harmful UV rays whilst staying a step ahead of the fashion curve. Lens color: Smoke Grey Polarized. Lens material: Plastic. Collection: Men 2015. Size: 57. Condition: new. Montana Collection By SBG MP94 Alan Polarized come with the complete original packaging. Montana Collection By SBG sunglasses come with a certificate of authenticity directly from the manufacturer. Warranty: 24 months. UPC: 5055860813395. Authencity guaranteed.