Product Description: Stabilize any Instant Canopy, Pop Up Shelter or Folding Tent structure with a set of durable Weight Bags.Weight bags can be filled with Sand, Rocks, Snow or any available material nearby. The dual weight pockets are sized to carry up to 1 liter beverage bottles. Specially designed Velcro straps will ensure that the Weight Bags stay securely attached to your Instant Canopy or Pop Up Shelter legs or upper trusses. Included in each kit are (4) durable weight bags. Just fill, close flap and attach to your canopy for a secure stable set up