Abstract: A system for boxing and exercise includes a base, a support connected to and extending vertically from the base, an extended cylindrical bag having a top, a bottom, and a mid-section, a concave zone of the mid-section of the bag, and a sensor connected to the bag. The sensor is communicatively connected to an application program (app) of a processing device for measure of strike count, strike power, strike angle and strike reaction time to the extended cylindrical bag. The concave zone simulates upper cuts, kidney punch, and other human opponent characteristics for strike.

Abstract: A vertically adjustable double end bag system includes a double end bag connected to a tether. The tether may be a continuous cord o two connected cords, and may be flexible or substantially fixed length. The double end bag includes an adjuster mechanism for selectively positioning the bag. A support, such as may be connected to a door or other upright fixture or as may be free-standing via a base, connects to and suspends the tether.