Popular, weighted medicine balls for the ultimate in proprioceptive input! Roll 'em up and down scooter ramps, go medicine ball bowling or play passing games. Ideal for all kinds of games and exercises. Available in your choice of a compact model for smaller hands, or larger, standard-sized balls; both in assorted colors, weights and sizes--including the 4" mini green medicine ball that weighs only 500 grams... perfect for preschoolers!