Features-fabric-at-top-side-of-head-back-stretch-fabric-to-fit-different-head-sizes-shapes-ergonomic-patterning-flat-lock-stitching-for-comfort-dual-zone-windstopper-elastic-side-panels-offer-contour-fit-on-neck-silicone-panel-to-keep-tucked-in-laser-cut-breather-holes-designed-to-be-worn-over-or-under-mouth