The Dino Skin" Difference! Buy 18 of our popular 7" Medium-Bounce balls (Item 1892), and get 6 FREE!-plus 4 FREE 24" x 26" mesh storage bags! Quality latex-free construction prevents air bubbles and weak spots from forming on these yellow bouncy balls. Waterproof, washable coating resists picking and cracking. Our no-sting bouncing balls for kids are a great, safe option! Lightweight, all-around use. Yellow only. SIZE: 7'' diameter 2-YEAR GUARANTEE.