Features Rebounds perfectly with each punch. Material: Dense foam covered with heavy-duty vinyl Ultra-stable base holds 100Kg + of water, though sand can be used for extra stability (not supplied). Available To Try Out In Our Showroom **Fitness Mad warranty notice: Please note that this product is not warranted for commercial use.  Specifications Inner Material Dense Foam Outer Material Heavy Duty Vinyl Height 115cm (3.7ft) Bag Diameter 37cm Bag Weight 4 Kg Base Weight (When Applicable) 14 Kg Base Maximum Weight Capacity Water: 100kg Warranty 1 Year