... to make you feel comfortable and fit, made by sponge, they are removable and washable· 2 ... ,top and bottom , made by PC, assembled by screw or melted by heating, hard to drop·color vary ... and hard to scratch by finger·buckle, strong ,adjustable ,made by PC·strap, made by nylon ,thick ,strong ... 27Measuring you head1. start by wrapping a measure tape around your head about a half inch above your ...