This disclosure describes a training bag apparatus including weights of the apparatus, one or more fixed and removable components. The training bag is adaptable for exercises wherein one or more fixed and removable elements is utilized as a slam bag, sled, backpack, weighted vest with adjustable internal weights to utilize individually or as an entire training system. The fixed and removable elements comprise of grips, adjustable straps, draggable surface, backpack straps, harness, connecting straps, adjustable internal straps with internal filler weights to use individually and/or as a complete set.

A resistance bar for exercise training includes an elongate body defining a central longitudinal axis extending between first and second ends of the resistance bar, a first handle and a second handle disposed along the elongate body and spaced inward from the distal end regions, each handle being forwardly offset relative to the longitudinal axis, and a first weight compartment disposed between the first and second handles and configured to receive one or more removable weights for selectively adjusting a weight of the resistance bar.

A shell assembly configured for holding one or more weighted articles includes an outer shell defining a cavity configured for receiving the article(s) therein, with a top, a bottom, and a shell opening providing access to the cavity. An extendible handle includes a grip, and a tether connected to the outer shell and the grip and extending between the outer shell and the grip, where the tether has flexible and rigid portions each forming a portion of the length of the tether. A storage compartment defined by an elongated sheath is positioned on the top of the outer shell and has an opening accessible from the exterior of the outer shell to receive the handle. The handle is moveable between a retracted position, where the handle is retracted into the storage compartment, and an extended position, where the handle extends outside the compartment and away from the outer shell.