Custom Tumblers will be an ideal gift for your birthday guest of honor. Choose these 16 ounce birthday cups with a free design, or create your own! They are sturdy, insulated, and worthy. They come in a variety of colors, which are bound to complement your theme. No theme? No worries! These are perfect. These 16 ounce double wall tumblers measure 6 1/4" tall with 9 inch straw and screw on lid. Hand wash only.