Irish Tweed Cap Green Beige Houndstooth. Our Irish Tweed Patch Flat Cap is a celebration of individuality and timeless Irish craftsmanship. Expertly woven in Ireland from 100% pure wool, no two caps are ever the same – each piece is unique, created from a selection of distinctive tweed patches. Warm, comfortable, and full of character, this cap adds a stylish, one-of-a-kind touch to both casual and smart outfits. Embrace your heritage and showcase your personal style with a cap that is truly as unique as you are.