MaxxMMA Double End Ball, Pump Included *2018 updated version with adjustable bungee cord. Free upgrade to Priority Shipping! *See Details Heavy duty spring bounces back for more punishment. Ideal for all punching action, slipping, counter punching and reflex! The absolute best equipment for developing speed, timing and accuracy + great stress relief for the home or office Pump Included. 2 wall mounts and 2 adjustable bungee cords.