Stone Island Mens Hats. Fashion category: Hats. SKU: 8115N12C5-V0M65/MELANGE CHARCOAL. Material: Wool. Color: Melange Charcoal. Stone Island Logo-Patch Virgin-Wool Beanie. This beanie is made from virgin wool with a ribbed knit, featuring a pull-on style and a logo patch at the front. 100% virgin wool. Made in Croatia.