but recommend for single vision)

Bridge 20 Base Curve:  6x Frame Features:

20% thinner and lighter than standard glass

Model: RB4179 601582

DBL 13mm Fit:  Small Universal Frame Features: Monel Composite Adjustable Nose Pads

Serengeti Progressive Sunglasses, Customer Provided Frame (Lenses Only) Non Polarized but recommend for single vision)CUSTOMIZED SERENGETI PRESCRIPTION LENSES FOR CUSTOMER PROVIDED FRAMES For Serengeti Frames. Flight Sunglasses will have Authentic Serengeti Lenses put into your frames (Progressive Lenses or Single Vision). Authentic Serengeti Glass Option Available in Newer Models by Request (~+$250) Great for updating your current prescription lenses or replacing your original lenses. Customer provided frames provide a savings and allows you the opportunity to use