Quality Material: They are very sturdy and can help umbrellas, tents, awnings stay in place in strong winds. They are made by hand. The bags are made of stronger 600D oxford fabric, well structured, they are sturdy. Each bag can hold up to 35-40 lbs of weight in sand, rock, dirt and other contents. [Easy To Carry]: They are simple to carry despite the weight when filled. They're also easy to empty and store when you're done using it. [Use It Anywhere]: You can use them anywhere you have an arbor: markets, , pikes picnics, festivals, celebrations, sporting events, or even at the beach. [Specially Designed]: Dual Velcro closure system ensures weight bags stay securely attached to your feet Instant Canopy And use the velcro on the top closed, it is very easy to put on and take off. [Satisfaction Guaranteed]: If you have any problem, please contact us by email, we will get back to you within 24 hours.