Chuckit Amphibious Duck Diver Dog Fetch Toy Is A Durable Floating and Fetching Toy. The Amphibious Duck fits in the Chuckit Mega Ball Launcher (sold seperately). Brightly colored for easy visability, unsinkable, and high-floating for fun in the sun at the park, or in the water. Constructed of rubber and rugged nylon material makes it tough and durable. Lightweight and tapered to fly through the air. Recommended for Medium to Large dogs. About 5"H x 3.5"W.