Sol Coastal Portable Beach Umbrella Cup Holder Crazy-convenient cup holder that installs right onto your umbrella pole Lightweight, and ultra-portable, folds down to just 4.75" x 3.75" Small profile makes it easy to toss right in your beach bag Holds a pair of drinks up to 2.5" wide. Great for cans and water bottles No tools required! Tightens with a simple, padded screw that won't mark umbrellas