The Oakley Straightlink Sunglasses is made to keep up with you on your active lifestyle. There is integrated Unobtainium as well which helps maintain a secure grip.Product Information:• Product Code: OO9331-2758• Three-Point Fit: Provides comfort and performance that holds lenses in precise optical alignment.• Durability and all-day comfort of lightweight, stress-resistant O Matter frame material.• Unobtainium earsocks and nosebombs increase grip with perspiration.