100% Authentic Best selling Original Gigwi bulbs for your dogs -Controls unwanted chewing -Helps release boredom -Food Grade Rubber -Durable & Strong -Cleans Teeth -Lessens dog anxiety -Stuffable with treats Note: Upon receiving, wash first with dishwashing liquid to lessen the smell of the rubber. Rest assured, that the rubber used in this item is Food Grade & FDA-Approved. Available sizes: Small (Color Blue) 3.3 inches height Medium (Color Red) 4.1 inches height Large (Color Purple) 4.9 inches height