PROLAST heavy-duty punching bags are designed for extreme training and workouts. This PROLAST Punching Bag is made with PROLAST RIP-PROOF Technology and carries a LIFETIME Warranty Certificate. No chains needed. 14″ X 14″ X 48″ – 80 Pounds (FILLED READY FOR USE)Prolast Boxing MMA 80 lb Heavy Punching Bag – Filled