Made to withstand the rigours and hardships of extreme and vigorous play. The Tuff Flyer is made from double layered ballistic nylon material. The toy is then double stitched for extra strength and durability. For added peace of mind, the squeaker is sealed in ballistic nylon material so that in the unlikely event your pet gets to the squeaker there is an extra layer of protection. These Ruff Stuff toys can also be used in water as they float.