Gardzen Canopy Weights Sand Bags, Sandbags For Weight, Set Of 4 Tent Weight Bags Material - Gardzen canopy weights set of 4 are made of Oxford cloth, inside coated with PVC waterproof material. Reinforced sewing and tough stiching technolohy make the canopy weights tear-resistant, sturdy, durable and long-lasting. Dimension - Sand bagd dimension: 11"(Length)* 16"(Height). The Velcro strap can hold canopy leg size less than 2.5? in diameter. Each weight bag holds up to 20lb. (Note: SAND NOT INCLUDED.) Velcro Design - There are two velcro closures go all the way across the opening to help keep the contents from spilling out. Two velcro straps at the top and bottom are allowed to wrap canopy legs and keep weighted bags upright and snug. An additional loop on the top for easy carrying. Easy to Fill - The sand weights are easy to install and fill. Fill into with sand, rock, bottled water, dirt or pebbles then close the velcro seal on the top of sand bags. When not in use, empty and fold them up, won't take much space. Versatile Use - The sand bags are plenty heavy enough once filled to anchor down canopy, pop up tents, gazebos, patio umbrella, shelters and breach stairs on the ground and keep them from blowing over.