Double Walled Glass Tea Cups / Set 2These Double Walled Glass Tea Cups from Tea Tonic are perfect for enhancing your tea experience. The square handles make them easy to hold, and the double walled design keeps your tea hot while keeping the cup cool to the touch. The cups come in a set of 2 and are sold in a branded Tea Tonic box. Tea Tonic's teas have been formulated by Naturopath and Herbalist Lisa Hilbert to produce naturally organic teas that are good for you, and great in taste!