PU boxing sandbag 1. Material PU inside with sand 2. Weight size: 5kg,8kg,10kg,15kg,20kg.. 3. Any color is OK Products feature:1. Perfect Core Sandbag Training Workout2. Rugged, military grade durable outershell construction3. 5 handles4. color in red, blue, black, yellow, and so on.5. Come with 5kg-25kg PU boxing sandbag