Finally, a heavy bag crafted with a less dense, softer hitting surface to help alleviate sore knuckles, wrists, elbows, and shoulders. The inside is professionally packed with a specially blended poly-fiber filler to provide a resilient absorbency while maintaining a firm, cylindrical shape for life. Center-aligned weight is precision placed for maximum force dispersion and balance. A tough triple-ply shell cover is tough and durable for maximum results. Cross-stitched canvas backing adds strength to the shell. Includes four seat belt nylon reinforced hanging straps with D-rings.