High-quality headphones in 2026 means something specific: a pair somebody measured, with a battery figure you can hold them to. Open ear headphones exist because noise cancelling removes exactly the kind of steady low-frequency sound a car engine makes. On a pavement that is a feature you do not want. Every running-focused reviewer makes the same recommendation for road use: keep the ear canal open.
Bone conduction sends vibration through the cheekbone to the inner ear, bypassing the canal entirely. Clip-on open designs instead sit just outside the ear and fire sound in. Both leave you able to hear a bike bell; both leak a little sound to the person beside you at high volume.
The limitation is calls in wind. Reviewers who run in these rate call clarity as good rather than class-leading, and no open design will beat a sealed earbud with a long microphone stalk on a windy day.