The No-Tip Cup Keeper is a no tip glass hoder designed for use by individuals with upper extremity disabilities. This plastic base is designed to prevent drinking cups from tipping over. The wide base has a trough that fits the Little Spill Cup (not included; see entry) all Flo-Trol cups (not included; see entry), and other cups of similar diameters. The device is made of polyethylene. DIMENSIONS: Base is 4 7/8 inches in diameter.