Oakley HSTN (52) Matte Carbon Prizm Ruby heart rate monitor a single charge ensures 50

a single charge ensures 50 hours of use at least

The Performance Line shows how ergonomics can win races

Updated with Mud-release channels and compatible with 12 speed

and impact protection

Oakley HSTN (52) Matte Carbon Prizm Ruby heart rate monitor a single charge ensures 50Oakley melds progressive design with heritage features in HSTN, a gender neutral sunglass with striking modernized circular lenses. HSTN features Prizm Lens Technology and a modernized trigger stem (influenced by Oakleys Razor Blades, an homage to the brands past). A lightweight and durable O Matter frame helps provide all day comfort and comes in two sizes for a more seamless fit. HSTN is available with Oakley Authentic Prescription lenses