Specially blended filler mix of sanitized synthetic and natural fibers provide resilient shock absorbency. • Premium synthetic polycanvas along with superior heavy bag construction provides long-lasting durability. • Heavy-duty nylon straps provide security and safety, while the double end loop provides increased functionality. • Heavy bag Available in 70 LBSSpecially blended filler mix of sanitized synthetic and natural fibers provide resilient shock absorbency. • Premium synthetic polycanvas along with superior heavy bag construction provides long-lasting durability. • Heavy-duty nylon straps provide security and safety, while the double end loop provides increased functionality. • Heavy bag Available in 70 LBS. Specially blended filler mix of sanitized synthetic and natural fibers provide resilient shock absorbency. • Premium synthetic polycanvas along with superior heavy bag construction provides long-lasting durability. • Heavy-duty nylon straps provide security and safety, while the double end loop provides increased functionality. • Heavy bag Available in 70 LBS..