Our 20 and 30 oz. stainless steel tumblers can be even better when you add in one of our handles. Our handles are made of plastic but they are built to last a lifetime. Enjoy the ease of carrying your 30 oz. Greens Steel BEAST Tumbler by using your handle, or simplify your coffee experience with a 20 oz. handle. These handles are great and make the effort of #bringyourowncup even easier.