Attention to detail:Each product is handmade in their storefront workshop in Denver. If ever you wanted proof in the pudding it's letting people watch you make your bags and wallets as they are buying them. Each product is simple and elegant in their styling but in keeping with the likes of Filson maintains it's functionality. The bags feature waxed canvas body's as well as natural leather detailing. The amazing thing about the materials Winter Session use is that they will age with use and get the nostalgic marks and wear from your book, keys or pockets.