SUM's mission to create performance quality eyewear with a smooth, fashion forward appearance is really shown in these Pioneer frames. Particularly with the slender arms and flex-hinge that adjusts perfectly to any size head. This feature was designed for people to be able to wear the sunglasses without a headache and the end of a long day of use.
- Lens Coatings - Scratch Resistant Lens Coatings. Stainless Steel Spring Hinges.
- Lightweight For Maximum Comfort - Impact resistant polycarbonate frame and temples.
- Eliminates Glare - 1mm Polarized TAC lenses block UVA and UVB and provide superior eye protection.
- Spring Hinge - Spring hinge adds durability to the overall frame design. Allows temples to automatically adjust pressure on the side of your head based on size.
Technical Sizing Description
Arm: 140 millimeters | Bridge: 16 millimeters
- Lens width: 57 millimeters | Lens height: 45 millimeters | Bridge: 16 millimeters