CoreX Matador Training Bag The CoreX Matador Training bag features several unique features. These include: Indented neck line for comfortable shoulder and squat based exercises. Further, the joining seam is at the rear of the bag, thereby not irritating users necks when undertaking shoulder rested exercises unlike competitor bags. Near perfect weight distribution over the shoulder blades, making for a more balanced lifting position. Unprecedented handle and grabbing options. At the top of the Matador bag is a spin handle that is ideal for curl based exercises. Four grab handles are on the bags sides, enabling an array of grip based exercises. Strap handles are located near the ends of each side of the bag, which are terrific for lifting exercises. Two removable loop handles are provided that loop over the strap handles. The loop handles are terrific for swinging exercises. The Matador Training Bag is filled with rubber pellets and is encased by cotton batting. This is considered the optimal fill, as the rubber pellets absorb force, maintain shape and weight distribution  unlike sand filled bags. The cotton batting provides cushioning. The bagged is skinned with soft, yet hard wearing synthetic leather. The CoreX Matador Training Bag comes in 5 weight options: 15, 20, 26 37 and 48 Lbs. Each bag is denoted in both Lbs and Kgs for ease of conversion. Patent pending.