6 Pack Pilot Metalless Bifocal Sunglasses Spring Hinges Sunshine Readers R2602SG Magnification Strength:+2.75 which means that it is

which means that it is less prone to rusting or oxidizing

Perfect for people who:

Lens width about 2 1/2 inches (63mm)

Lens Type: High-Efficiency Deep Red Lenses (For Bedtime/Nighttime Use Only)

Bridge(DBL)about 1/2 inches (13mm)

6 Pack Pilot Metalless Bifocal Sunglasses Spring Hinges Sunshine Readers R2602SG Magnification Strength:+2.75 which means that it isMetalless and Screwless Design. Acrylic Lens, plastic frame with unique flexible spring hinges. Product Dimension: Frame width about 5. 63 inches (143mm), Lens width about 2. 09 inches (53mm), Lens height about 1. 61 inches (41mm), Bridge (DBL) about 0. 67 inches (17mm), Temple length about 5. 51 inches (140mm). Solid Construction: Meticulously built to withstand regular use without succumbing to damage. The screwless hinges guarantee the hinge's