These BOSS sunglasses are designed to deliver a flawless fit to customers with Asian features. They�re built in titanium, an extremely flexible, lightweight and hypoallergenic material. The new tubular shape of the temples is noteworthy, further accentuated on the versions with sophisticated contrast hues. To ensure their comfort, these impeccably stylish frames come with flexible hinges and adjustable nose pads. These glasses are made to fit prescription sun lenses.?