Most pairs of noise-canceling earphones are designed with comfort in mind and can be adjusted if the fit isn’t quite right. If you’re concerned that they won’t properly fit your head, consider taking your measurements, and comparing them with the specs on the seller’s page. The majority of pairs have very soft cushions within their cups, as well as padded headbands, so you should only be feeling mild discomfort after a very long period of time. On the upside, high pressure means good results!