Knockaround Bike

Frequently Asked Questions

• Are Knockaround sport sunglasses polarized and safe for cycling glare?

  Most Knockaround sport models are polarized and feature UV400 protection that blocks 99–100% of UVA/UVB rays, which reduces glare off pavement, water, and wet rocks. Lenses are FDA‑approved polycarbonate and marketed as impact‑resistant (up to ~10× stronger than standard plastic/glass), and rubber nose and temple pads keep the frames secure during high‑intensity riding.
• How do I choose the right lens tint for different cycling conditions?

  Pick a darker tint (lower light transmission) for bright sun—options like Aqua (≈9%), Moonshine (≈11%), and Smoke (≈16%) cut glare and eye strain on open, sunny rides. For mixed or overcast conditions choose higher transmission tints such as Mint (≈22%) or Rose Gold (≈13%) to preserve contrast on shady trails.
• What fit and sizing should I expect from Knockaround sport/wrap sunglasses?

  Knockaround sport shades are a medium unisex fit with a standard 18mm bridge, overall width ≈140mm, lens width ≈51mm, lens height ≈52mm, temple length ≈143mm, and a base curve of 6 for wraparound coverage. The wrap design plus embedded rubber nose and temple pads helps prevent slipping under a helmet and during rough terrain.
• How do Premiums Sport and Fast Lanes Sport compare for mountain biking?

  Both Premiums Sport and Fast Lanes Sport use lightweight polycarbonate frames, polarized impact‑resistant lenses, UV400 protection, and non‑slip nose/temple pads, so they deliver similar protection and durability. The Fast Lanes Sport is positioned as a more aggressively styled wraparound athletic frame for maximum coverage, while Premiums Sport is noted for a balanced sport silhouette and broad lens/tint options; choose based on desired frame shape and preferred tints or special editions like the 20th Anniversary Fast Lanes.
• What lens technologies and coatings improve durability and clarity on the trail?

  Many Knockaround sport models offer oleophobic coatings to repel oil, sweat, and water and improve scratch resistance, and FDA‑approved polycarbonate lenses provide high impact resistance. Knockterra™ Lens Tech is available as a non‑polarized option for enhanced depth perception and color accuracy, and laser‑etched logos and durable construction help the frames hold up to regular outdoor use.