First there were the standard red sponges, then super soft, making the older routines easier. Now, ULTRABRITE, a vibrant color boxed set of four balls of the same color. Either use them in a standard routine, or better yet make switches during your routine to spice up your final production. Goshman's legacy of fine sponge manufacturing ensures you of quality magic. Currently available colors are green, orange, yellow or blue. Assortment may vary.