Bulldog Gear - Strongman SandbagSand is not provided for this product this must be purchased separately from your local hardware store. A Sandbag designed with durability in mind. Whether you're in the gym, back garden or the great outdoors the Strongman Sandbag 2. 0 is made from 1000D Cordura with a secure built in filler bag, meaning it will last longer than other sandbag options on the market. Sandbag product features: Colour coded embroidery to differentiate between weights.