LONG-LASTING FUN: The specially designed maze inside ensures long & lasting fun - your four-legged friend will love it. Simply put treats through the opening and your darling will be busy. ROBUST & SAFE THANKS TO PREMIUM NATURAL RUBBER: made of natural rubber - bite-resistant, robust & Eco-Friendly - Free from toxins & unnatural plastic. Natural rubber has a typical odor that will naturally dissipate after a few days. THE PERFECT COLOR FOR DOGS' EYES:Dogs suffer from a red-green color - poor eyesight. The blue color immediately catches your dog's eye and therefore stimulates the most intensively - that's how it's really fun. YOUR FOUR-LEGED FRIEND'S NEW FAVORITE TOY: Whether small , medium or large. is suitable for all dog sizes - including puppies.