RDX's heavy punching bag is built to withstand the punishing power of Muay-Thai kickboxing, MMA, and boxing. Made from Maya Hide, the Heavy duty punch bag with double stitch durability also comes filled with textile pulp. Twinned layer offers maximized force dispersion, making the RDX heavy bag a quality choice for gym or home use. Heavy gauge welded-D rings which are double stitched and riveted to the bag for extra sturdiness. Zip-fastened top closure ensures convenient filling.