Any cup handle, water bottle handle fits 30 to 40 ounce tumblers. These are hand beaded with silicone beads handles for your cups tumblers and water bottle bottles. They come with a silicone adapter to put on your favorite cup. They are interchangeable adapter is shown for a 40 ounce Stanley however it does fit a 30 ounce Stanley it does take some strength to maneuverability to get it on a cup this size I suggest putting it on when the cup is empty
