The best sunglasses for cycling: coverage, the shade problem, and why the pros ride brown

For cycling, the lens has to handle sun and shade in the same second, and the frame has to keep wind and grit out of your eyes at speed. That points to a medium brown or amber lens, not a dark one, and to a frame that covers the eye and sits close without sealing so tightly that it fogs on a climb. Polarized removes the glare off wet roads and car glass, with one check to make first: some bike computer screens go dark through it. The tint that road riders have settled on over decades is a warm one, and the reason is contrast on tarmac.

The shade problem

A cyclist on a tree-lined road passes from full sun to deep shade and back every few seconds. A lens dark enough to be comfortable in the sun is nearly opaque in the shade, and for the second it takes your eyes to adjust you cannot see the pothole. That is the one thing cycling asks of a lens that walking does not.

The answer is a medium tint. It is slightly too light for the brightest stretches and much safer in the dark ones. This is also why photochromic lenses, which darken in sun and lighten in shade, are popular with riders; our photochromic post covers what they do and how fast.

Lens colour for cycling

Brown or amber is the road lens. It absorbs more blue than grey does, which lifts contrast and makes the texture of tarmac, the edge of a gravel patch and the line of a wet stripe stand out. Under trees it separates the road from the dappled shade. That is the T01 Brown.

Red mirror on a warm base does the same job with a stronger separation of greens and reds, which is why so many cycling lenses are amber-to-red mirrors. The mirror cuts a little extra light on bright days; the warm base does the optical work. That is the T01 Red.

Grey keeps colours true and works for flat, open, bright rides. Less contrast on the road surface, so most riders end up with a brown.

Dark blue mirrors are water lenses. Too dark for shade and the wrong cast for tarmac.

Coverage and wind

At speed, wind dries the eye, grit and insects arrive fast, and a gap at the side of the frame is where they get in. Cycling-specific frames are wraps or shields for that reason. The trade is that a sealed wrap fogs the moment you stop at the top of a climb; our fogging post explains why, and why vented sport lenses exist.

Our T01 is a rectangular frame, not a wrap. It covers the eye with a 60mm by 50mm lens and a wide 140mm front, and because it sits slightly off the face it fogs less. It does not seal against wind at speed the way a shield does. For a Sunday road loop it is enough; for racing or fast descents, buy a shield.

Polarized: yes, with one check

Wet roads, car bonnets and windscreens throw horizontal glare, and a polarized lens removes it. On a ride that is a real gain, especially in low sun. The polarized vs non-polarized post goes through it.

The check: bike computers and some watches use LCD screens that go dark or rainbow through polarized lenses at certain angles. Most modern head units are fine. Put the glasses on and look at yours before you commit; the phone screen post explains what you are seeing if it happens.

Impact and lens material

A crash puts the lens against your face. Plastic lenses, polycarbonate and tri acetate cellulose, flex and do not shatter the way glass does. Some cycling eyewear is tested to an impact standard and says so; everyday frames, including ours, are not claimed to be.

Frequently asked questions