DESIGN: Dual, square-shape lens design; FRAME MATERIAL: Durable, lightweight O Matter™ frame material; Unobtainium® sport ligature nose pad designed to reduce bobbing and bouncing with a no-slip grip; NO-SLIP GRIP: Unobtainium® ear socks provide a no-slip grip when wet to help increase retention; SEE MORE DETAIL: Prizm™ Lens Technology engineered to enhance color and contrast to see more detail; 100% UVA/UVB protection; Made in USA