The JW Pet Company Canvas Gel Line is a truly new toy concept. Each toy is created by layering canvas fabric and then embedding it into our durable TPR (Thermoplastic Rubber). Inside each toy is the Crackling" Bottle Ball from our award winning Crackle Heads line. Using our new laminating process we have engineered this truly unique crackling", crunching" toy. This revolutionary development increases the strength of the canvas and gives it a fun, bouncy texture with a whole new look and feel that dogs love. Available in a small, medium and large size. Each toy is yellow on one side and blue on the other. Another intelligent idea from JW Pet.