Super soft microfiber plush made amazingly strong! When sewing the toy's seams together, we add webbing to the vulnerable seams to reinforce and make them stronger. This extra binding creates multiple rows of stitching to hold the seams together. All seams are located inside the toy to discourage chewing. Vulnerable seams are protected by sewing a flexible material over the edge of the seam. Each toy starts with a hollow plastic squeaking core of balls and squeakers. Great for interactive play with one or multiple dogs. Best for dogs who like to whip their toys and play tug for hours. Floats in water, and it's machine washable (air dry).