Half-rim sunglasses strip away the lower frame edge to open up your downward field of view, but that design choice often comes with a compromise in lens stability. The Technium L from Shimano addresses that tension directly. The remaining rim structure holds the one-piece lens firmly in position while the absent bottom half lets you glance down at your computer, check your line through technical sections, or scan for traffic without the visual interruption of a frame bar cutting across your sightline.

Shimano builds the frame from Rilsan Clear G850 Rnew polyamide, a bio-based material that's 45% renewable. The radiused temples curve gently toward the ears with a non-slip pattern along their length, and dual-injection TPE tips grip without pinching. The reversible nose pad offers two thickness options depending on whether you want the frame sitting higher or lower on your face, which affects both the amount of air flowing behind the lens and how much of your peripheral vision the frame occupies.

Lens ventilation comes from strategically placed slits that let air circulate and prevent fogging during hard efforts or humid conditions. The hydrophobic coating sheds water and sweat before droplets can accumulate and blur your vision, while an anti-scratch treatment protects the polyamide lens material from the inevitable contact with jersey pockets and handlebar bags. The interchangeable lens system accepts multiple RIDESCAPE options tuned for different riding environments, and Shimano includes a clear spare lens for low-light conditions when you still want eye protection without the tint.... Read More