Bags and totes are typically made with a combination of sturdy neoprene, waterproof canvas, vinyl and ripstock.   The addition of webbing straps, zippers, and other trim work add to the uniqueness of each item.  Customize with your favorite team colors!  The only limit is your imagination!  Below are some options to consider.  I have a selection of marine grade vinyl and canvas to choose from if a special order is not necessary.