Our handy Red and Blue Clip-On Bottle Holders can be used on chairs, tables and more. These sturdy plastic holders function like giant bull clips, with a wire spring mechanism in the center and ends that you squeeze together to secure it onto a level surface edge measuring up to 2 1/4in deep. Clip has a circular space for drink bottles or cups measuring up to 2 3/4in in diameter. Each Clip-On Bottle Holder measures 6 3/4in long x 3 1/4in wide x approximately 3in high when not in use. Package includes 1 Red and 1 Blue Clip-On Bottle Holder; 2 holders total.