This cute charm is perfect for your favorite tumbler, just in time for Spring and Summer. This can also be used on your favorite insulated coffee mug with a handle height of approximately 2.5 inches high. It is easy to attach, simply unscrew the clasp, slide through the handle then reattach the clasp. If the clasp is hard to attach you may need to pull back on the beads a little bit. It is not recommended that you put this in the dishwasher but it can be washed with soapy water.