Extremely lightweight and soft fabric covers a strong but pliable metal skeleton that grips the head gently but firmly Wrap around earmuffs and go round the back of the head Light and easy to carry by folding these earmuffs up INTIMATE: The band wraps around the back of your head, thus it keeps your ears warmer than a beanie but your hair doesn't get all messed up. HAVE A FREE REIN: You can use ear buds underneath the earmuffs, letting cold time flowing in warm music; you would certainly wear it together with your mask when biking.