Impress your friends when your Tumbler lights up at night. Our 20oz Glow Tumblers are double walled to keep your drinks hot or cold. Comes with plastic straw. Please select any design we have on our website or have us create something special for you. In the instruction box at checkout include what design you would like. If its a custom design please tell us that in the instructions and send photos to Designs@ssuphoto.com