Simple, convenient, durable and looks great - Just add your own sand* Designed for umbrella stands with up to a 3.0" umbrella post, but can accommodate post sizes of up to 3.5" by filling the bag less full New design - Now includes our exclusive rugged and durable Ballistic Rip-Stop fabric - no rust, dings or dents Adds up to 110 lbs of additional gravity to your existing umbrella base Soft and easy on the toes, no hard edges to kick.