The Zisc is the BEST frisbee ever!!! Our high energy Visla is very tough on toys but the Zisc can take the punishment!! She loves to play catch and retrieve (for hours if we had the time). The Zisc is the only frisbee that lasts! And it doesn't hurt her mouth. We have tried numerous others and have not found one as AWESOME as the Zisc! Hope you keep making this product!!