D'Arcs - Brook Lifestyle Sunglasses Color:Grey/Purple Normal O-Ring and many modified

Normal O-Ring and many modified O-Ring designs have pressure points that increase friction and decrease chain life

SPECIFICATIONS - Small (51-55 cm)

Constructed from 7010 T-6 aerospace quality aluminum

it allows you to accurately assess your output

Main structure 38mm/1

D'Arcs - Brook Lifestyle Sunglasses Color:Grey/Purple Normal O-Ring and many modifiedPolycarbonate impact resistant, ultra durable lens & frame Optically correct and provide 100% UV protection Great for all outdoor sports and activities TAC (Tri Acetate Cellulose) Polarized lenses feature a new lens technology formulated for enhanced visual and polarization clarity. They are hard coated to resist scratching and block out 100% of all harmful UV rays (400x) and are also very lightweight.