Great toy for dogs. Mine is obsessed with any form or shape of balls, nothing else interests her, so im always looking for balls with something a little different. this is that. Plush in the middle. The medium size is a little bigger than a tennis ball plus the feet too. It also has a squeak which keeps my dog interested. shame the colour couldn't be specified but then again I'm pretty sure the dog is not bothered about the colour only the owner.