Dogs love a chase! BecoBalls are shaped to bounce irregularly and hold your dog’s interest for longer. A tougher inner core offers durability and extra spring!To produce this rubber toy range, BecoThings have gone back to the drawing board and developed a unique material and a new means of manufacture. All BecoToys are made from their own Rice Husk Rubber.Rice husks are ethically sourced as a bi-product from agricultural processes native to China. By manufacturing locally to their material source they have significantly reduced their shipping volumes. Amazingly, BecoToys are made from 100% natural, biodegradable materials but are as durable and safe as other toys on the market. What’s more – if a BecoToy is thrown away it will breakdown and biodegrade in landfill over 3-5 years leaving no trace of synthetic waste or landfill footprint.8.5cm Diameter.