For the first time - maximum sun and hearing protection combined allows the wearer to use ear muffs or headsets ideal for tradesmen, gardeners, prospectors, pilots, shooters or anyone that works outdoors with noisy machinery in the hot damaging sun. A big 10cm brim - much bigger than the Cancer Council recommendation of 8cms. Neck Protector: Cotton fabric - 25cms long with ventilation slits to allow air passage around back of the neck. It's designed to fold up inside crown (top of hat) when not required. Terry towelling sweatstop headband. Great ventilation - 12 eyelets, 4 mesh eyelets, 8 embroidered eyelets. Cord & toggle - with elastic loop to store cord and toggle inside the crown of the hat, when not required. Heavy duty brass press studs are used to secure cut-outs in the brim around earmuffs and ensure the brim does not open when in use. Folds in half for storage, simply undo press studs, will fit into small bag. Double lined top of crown (hidden pockets). Absolutely no sun penetration. Light, comfortable, well ventilated, Machine washable. Drip dry. Country of origin - China. Styles: M3 - For standard earmuffs. The smaller cut-out allows less sun penetration when using the hat without earmuffs. Comes with neck protector. M4 - For those earmuffs with the large (fat) earpieces They fit through the larger cut-outs in the brim and allow the hat to be pulled further down on the head (as per the photo). Comes with neck protector.