BZ Optics PHO Sunglasses Photochromic HD Bi-Focal Lenses +2.5 Yellow Frame

The bi focal magnification which is moulded discretely into the rear of the lens is available in +1.50, +2.00 and +2.50 powers.

This hi definition copper coloured lens will change from Cat1 pre dawn or low light to dark Cat3 as the sun intensifies and the UV increases.

The TR90 super lightweight hybrid frame has dual moulded non slip flexible temples ideal for wearing under open or full face helmets. The adjustable non slip nose piece ensures optimum fit and comfort for all face shapes.

Features:

• Lightweight flexible frame with dual moulded non slip temples.
• Adjustable non slip nose piece for comfort and fit making them ideal for a wide range of face shapes and sizes.
• Small clips which make changing lenses effortless.

While the glasses were originally developed for cycling they are ideal for many other applications and sports.