A REVIEW OF BRAIN TEASERS

Dilemma: What runs but hardly ever walks, has a mattress but never sleeps, a mouth that under no circumstances speaks, as well as a head that by no means weeps?138. I come in many alternative hues And that i get more substantial when I’m whole. I'll float away should you don’t tie me down and I can make a loud audio if I split. What am I?Riddle