【High-standard Eco-friendly Safety Materials】 It is made of high quality and food grade HD-EVA ABS material, environmentally friendly and non-toxic. It's gentle on a dog's mouth and dog onwer's hands, but also super strong and durable enough to play the push and pull game. 【The Perfect Fitness Ring for All Dogs】 LaRoo dog flying fitness ring is a suitable interactive toy for throwing, catching, retrieving games, tug of war and chewing with dogs. It consists of aerodynamics and ring design to make it tossed and picked up easily. 【Clean Teeth ＆ Enhances Underactivity】 The raised surface area of ​​the LaRoo fitness ring helps the dog massage the gums, clean teeth and prevent your dogs from periodontal disease. The multifunctional fitness ring can be used as a flying disc, can be hung on the dog's neck, can be used on the water, increase the dog's activity, improve movement, reduce anxiety and depression.