There are two common types: fillable sandbag-style weights sold as multi-bag sets, and leg weight bags that are included with many pop-up canopies. Fillable sandbags are bought empty and filled on site; included leg weight bags usually come with the canopy kit as part of its stabilization accessories.
Some fillable sandbag sets provide up to 270 lbs total across a six-bag set. Many pop-up canopy kits include four leg weight bags that together weigh about 44 lbs when filled.
Sandbag-style weights have a Velcro-sealed opening for quick filling with sand, gravel, or similar fillers. They include Velcro straps (and often handles) so you can wrap and secure the bag tightly around the gazebo leg or frame.
Leg weight bags are typically made from durable textiles such as 600D Oxford fabric with a PVC coating or reinforced polyester. Listings commonly cite reinforced stitching and double-layer construction for improved tear and water resistance.
Sandbag-style weights are intended to be filled with materials such as sand or gravel (or other on-site fillers). Product descriptions typically note that filler materials are not included.
Listings commonly describe leg weight bags as weather-resistant and built for durability, citing features like reinforced stitching, double-layer construction, and water- and tear-resistant fabrics.
Common fastening features include strong Velcro straps, buckle straps, and handles that let you secure the bag closely to the leg or frame to reduce shifting.