22 1/2 - 23 7/8 * Fits the following BERN Helmets: Baker EPS, Watts EPS & Macon EPS * BERN"s Audio Knits are low profile, so even if you are not rocking the audio, you have a clean and slim, functional knit * High fidelity drivers pump premium loud quality sound and solid bass * Goggle Clip included with knit purchase