Sport Sunglasses | MTB, Ski & Trail

BOLD sunglasses are engineered for athletes and outdoor enthusiasts who demand crystal clear vision and all day comfort. Whether you are playing beach volleyball under the blazing sun, mountain biking through shadowed forests, or skinning up the backcountry at dawn, we have a frame and lens combination perfectly suited for your face and your sport. We also offer dedicated kids models, which are great for younger athletes as well as anyone with a smaller face shape. Every pair of our sunglasses is built with super high quality materials and comes complete with a protective hard case, a microfiber lens cloth, and a carrying pouch. With awesome frame colors, distinct shapes for different face profiles, and your choice of fixed or photochromic lenses, you will find the exact style and performance you need to elevate your game.

What is the difference between fixed color and photochromic lenses?
Fixed color lenses maintain the exact same tint regardless of the lighting, making them perfect for days with consistent bright sun. Photochromic lenses automatically adjust their tint based on the light around you, lightening up in the dark and darkening in bright sunlight.

What sports are photochromic sunglasses best for?
We have seen incredible success with our photochromic lenses in beach volleyball, skiing, ski touring, skinning, hiking, mountain biking, cycling, and baseball. They are the ultimate choice for any activity with changing light conditions.

Do you make sunglasses for kids or smaller faces?
Yes, we have dedicated kids models available. These frames are specifically designed to comfortably fit younger athletes, and they also work great for adults who simply have a smaller face and need a more secure, narrow fit.

What comes included with my sunglasses?
Every pair of BOLD sunglasses includes a durable hard case, a premium lens cloth, and a soft pouch to keep your crystal clear lenses safe and smudge free.

Are photochromic sunglasses good for mountain biking?
Yes — photochromic lenses are the top choice for MTB specifically because light changes so fast in the trees. A fixed-tint lens is either too dark in shade or too light in sun. Photochromic lenses adjust continuously as you ride, so you always have the right amount of light transmission without thinking about it.

How long do BOLD photochromic lenses last?
Photochromic lens coatings typically last 2 to 3 years with regular use before the transition range starts to narrow. The lenses still work, they just don't get quite as dark at peak UV or quite as clear in low light. Replacement lenses are available for all BOLD frames when you're ready to refresh.

Finding the right lens technology is the key to unlocking your best performance on the mountain, the trail, or the court. If you typically ride, play, or hike in consistent bluebird weather, our fixed color lenses offer incredible glare reduction and sharp contrast all day long.

However, if your adventures take you through unpredictable or shifting light, our photochromic lenses are an absolute game changer. Because these lenses adapt automatically, they are perfect for moving in and out of the trees while mountain biking or skiing. They are also ideal for early morning starts when you begin your ski tour or cycling route in the dark and finish in the bright midday sun, or for evening baseball games that transition from daylight to playing under the lights. Pair that adaptable technology with our comfortable frame shapes, including our specially designed kids models for smaller faces, and you have one pair of sunglasses ready for absolutely everything.

Shop BOLD Sunglasses by Activity

Mountain Biking: Photochromic lenses are the top choice for MTB — light changes constantly in the trees and a fixed tint is always a compromise. The Drift and Wavelength are the most popular MTB frames. Shop photochromic sunglasses.

Skiing & Snowboarding: BOLD photochromic sunglasses transition fast enough for spring skiing and all-day resort days. Paired with a helmet and balaclava, they work for bluebird laps when you don't want to deal with a goggle setup. Shop photochromic sunglasses.

Trail Running & Hiking: Lightweight wraparound frames with photochromic lenses handle everything from shaded canyon trails to exposed alpine ridgelines. The Zippy and Wavelength are popular choices for running-specific fit. Shop all performance sunglasses.

Everyday & Lifestyle: Fixed lens styles in classic shapes for daily wear. Sport-derived construction that holds up to actual use. Shop fixed lens sunglasses.

Sunglasses Buying Guides

Best Photochromic MTB Sunglasses (2026): What to look for in photochromic lenses for mountain biking, how auto-tint lenses perform in mixed forest light, and which BOLD frames work best for the trail.

Photochromic vs Fixed Lens Sunglasses: Which Should You Buy?: How photochromic lenses work, when fixed tint wins, and a sport-by-sport breakdown of which lens type is right for your activity.

Best Mountain Bike Sunglasses: What to Look For and Top Picks: Lens type, frame fit, coverage, and transition speed — explained for trail, enduro, XC, and desert riding.

Shop by Activity

• Cycling Sunglasses — Drift, Zippy, Wavelength — photochromic auto-tint for road and trail. Bearclaw for fixed-tint in bright conditions.
• Skiing Sunglasses — Glow, Drift — photochromic handles the dawn-to-midday UV swing on the mountain.
• MTB Sunglasses — Drift, Flash — wrap frame, full coverage, stays in place on rough terrain.
• Trail Running — Zippy, Wavelength — lightweight, low-profile, photochromic for variable forest light.

Photochromic Sunglasses

BOLD photochromic sunglasses use auto-tint lens technology that automatically adjusts as light changes around you. They darken in bright sun and lighten in shade, under tree cover, at dawn, or on overcast days. One pair handles everything — no swapping, no guessing. Best for mountain biking, skiing, trail running, ski touring, and any activity where conditions shift throughout the day.

• Drift — Wraparound performance frame, top-seller for MTB and skiing
• Wavelength — Semi-rimless design, lightweight, great for endurance sports
• Glow — Full-coverage sport frame with maximum side protection
• Emerald — Sleek everyday-to-sport crossover frame
• Zippy — Compact sport frame, strong performer for cycling and running

Shop all photochromic sunglasses

Fixed Lens Performance Sunglasses

Fixed-lens sunglasses deliver purpose-built optical performance for conditions you know. Pick a tint matched to your terrain — polarized for high-glare days on water or snow, high-contrast for variable mountain light, or neutral grey for everyday use. The right fixed lens outperforms photochromic in its target conditions.

• Bearclaw — Bold aggressive frame, mirrored lens, built for bright-sun performance
• Thunderhead — Wide-coverage sport frame, strong glare protection
• Flux — Classic performance shape, versatile for sport and everyday
• Scope — Streamlined frame with wide lens coverage
• Shadows — Lifestyle-sport crossover with a clean profile

Shop all fixed lens sunglasses

Kids Sunglasses

BOLD makes two kids frames built for young athletes and smaller face shapes — with the same lens quality and protective case as adult models.

• Rippers — Kids sport frame for active riders, skiers, and runners
• Senders — Slightly larger kids frame, works for smaller adult faces too

Shop kids sunglasses