Smith has launched the new Syncline, a performance sunglass designed to give riders a goggle-like level of coverage in a lighter, more open format. For mountain bikers, that makes it a notable addition to the growing category of large-lens eyewear aimed at riders who want more protection from glare, spray and trail debris without committing to a full goggle. It should also appeal to newer riders who want something straightforward: a big field of view, a stable fit and a modern shield-style look that works well on mixed terrain.

The Syncline uses a rimless cylindrical shield lens with a slight wraparound shape, and Smith says the design is intended to combine broad coverage with the lightweight feel of a sunglass rather than a goggle. For UK riding, where conditions can shift quickly between bright open sections, darker woodland and damp trail surfaces, that wider lens format makes practical sense. Riders who spend long days on eMTBs, trail bikes or gravel bikes may also appreciate the more open feel compared with a sealed goggle setup.

A premium eyewear option built around coverage and clarity

According to Smith, the Syncline is built around its ChromaPop lens technology, which is designed to improve contrast, clarity and definition. On the trail, that should translate into a clearer view of roots, rocks, loose surfaces and changing grip levels, which is useful whether you are an experienced rider pushing the pace or someone newer to mountain biking who simply wants more confidence when reading the trail.

Smith has also added several practical details aimed at active riding. The frame includes an integrated bumper intended to reduce chatter when worn with a helmet, while auto-lock hinges and adjustable megol nose pads and temple grips are there to help keep the glasses stable during rougher riding and sweaty climbs. Each pair comes with two interchangeable lenses, including a clear lens for low light or night riding, while a photochromic Clear to Grey option is available for riders who want one lens to handle a wider range of conditions.

A launch that fits neatly with Smith’s MTB protection presence

There is also a natural crossover here with the rest of Smith’s mountain bike line-up. In our Smith Mainline full-face helmet review, one of the strongest impressions was how well the helmet balanced protection, ventilation and day-to-day usability. The new Syncline appears to follow a similar path. Rather than being positioned as a niche race-only product, it looks more like a premium riding option for people who want clear vision, generous coverage and long-ride comfort.

That should make it relevant to a wide spread of riders. Experienced mountain bikers may like the extra coverage for faster descents and unpredictable UK conditions, while less experienced riders may simply find the large shield lens more reassuring than a smaller traditional sunglass. It also sits neatly alongside the wider protection conversation already happening in the sport, particularly as more riders start thinking carefully about helmets, eyewear and trail-ready kit together. For anyone already browsing our guide to the best full-face MTB helmets 2026, the Syncline feels like part of that same broader move towards confidence-focused riding gear.

The Smith Syncline is available now in five colour options, priced from £189 in the UK. Each pair includes a bonus clear lens, a microfiber pouch and a hard case, with compatibility for Smith’s ODS5 prescription adaptor for riders who need corrective lenses. Overall, it looks like a premium new eyewear option for riders who want maximum coverage in a sunglass rather than a goggle.