adidas Training Boxing Gloves Red PU3G Innovation. PU3G is a material that looks and feels like leather. Flexible and very resistant, it is resistant to changes in temperature and humidity. AERO PUNCH TECHNOLOGY that uses an aerated moulded foam structure to provide better impact absorption and therefore greater comfort for the boxer. Strap-up Technic, a new system for adjusting boxing gloves that provides a quick and precise fit using a hook and Loop Closing System. Colors Available Blue/White & Red/White