Iron Mind Small Sandbag Liner (Yellow)

Use the yellow liners with the Small Tough-As-Nails Sandbag as full size or partially filled to make a bunch of sandbag "weights": fill, fold, and secure with duct tape; coarser-grained sand works best. These liners add strength and security and we recommend them inside the sandbags:

https://www.sportheavy.eu/product/14180/iron-mind-small-tough-as-nails-cordura-sandbag--pieni-hiekkasakki

Small yellow mesh polypro liner 18" x 30" (the size of a 100-lb. bag of sand).