• Champion Sports. • Hand sewn soft nylon cover. • Bright colorful 18 panel cover for easy tracking. • Tough rubber bladder for exceptional air retention. • Indoor training ball. • Available in 3 sizes. • VL-10 is 20% Smaller and lighter than a traditional volleyball. • VL-20 is 20% lighter than a traditional volleyball. • VL-30 is 20% Larger and lighter than a traditional volleyball . These durable lightweight training balls differs from normal balls in weight size and softness. Unique hand sewn soft nylon cover provides a sting free surface-students are not afraid to hit them. An excellent training tool Sof-Train balls have a high quality bladder and bright colorful 18 panel cover for easy tracking.