Puerto - Navy/Slate Size:One Size For 9 and 10-speed chains

For 9 and 10-speed chains

Thermoplastic reinforcements support the SYMBIOZ distortion constraints to provide a natural stride in both the bending and twisting phases

15 year shelf life

and a lifetime warranty

Patent pending form-fit design

Puerto - Navy/Slate Size:One Size For 9 and 10-speed chainsMade with recycled plastic mean you can feel really good about your sunglasses. Polarized lenses enhance your vision and make it more fun to be in the sun. Polarized Lenses SuperLight Recycled Frames All Day Comfortable Fit The Puerto is a medium large sized frame with a square shape. Wrap & Angle: High Temple Width: 146mm Bridge Width: 17mm Lens Width: 57mm All Puerto lenses are polarized, block 100% UVA UVB UV400 wavelengths Eye Coverage: Good Lens