Omatter - Formulated for high durability and controlled flexibility, Oakley's lightweight O-matter frames maintain superior protection and comfort,Three Point Fit Technology - Oakley's three-point fit ensures that each frame makes contact only at the bridge of the nose and behind the temples thus retaining the optics in perfect alignment
Sunglasses are good, got with handsome discount. Happy to have. Good for those who like to have small ones and lighter one's. Disadvantage: not came along with hard oakley case which will definitely decrease its life.