Features: Adopt water-resistant oxford fabric with PU coated, durable and waterproof. Can be filled with sand, rocks, water, snow or any available material nearby. Wheel shape design, with hole in center, the sunshade umbrella shaft can be insert in for better stable. Great patio umbrella weight bag, no more tipping on windy days and enjoy your peace noon with it. Suitable for all exterior canopy, Sunshade, Pop up shelter or folding tent uses. Suitable for courtyard umbrella, tent and billboard and so on to avoid them being knocked down by wind or children to protect your family and home better. It can be folded and stored when not in use, which is convenient, environmental and doesn't occupy space.