NRS H2O Audio Waterproof Case iPod Nano (3rd Gen):
Nano is a prefix meaning one billionth...but if your Nano plays music and you play outside you want to protect it. H2O Audio has just the thing, a waterproof, shockproof iPod Nano case.
Dimensions: 5 7/16"L x 2 7/8"W x 1 1/8"D
Waterproof: To 10ft/3m when used with H20 Audio's waterproof headphones