VTX Wall Ball. 14 in. Diameter. 4lbs. Yellow on Black. High Quality synthetic leather and heavy stitching. 1 year warranty.. 14 in. Diameter (4 lbs.). Troy Barbell's wall balls look better, feel better, because they are better. Perfect for the CrossFit community or anyone else looking for a durable, affordable medicine ball. These balls are the most well constructed, yet least expensive ball than what is currently in the market place. Troy Barbell is revolutionizing the wall ball market.