We've already recommended Incase's sleek leather wallet for the iPod nano. It's a great case for day to day use and casual attire. But for those times when you feel the need to get active and a little sweaty, you'll want something more sporty. Incase's Neoprene Sleeve for iPod nano ($20) will do the job better than any other. It features full protection, including a clear screen protector and click wheel cover with play-through access. The sleeve has also got a belt clip and easy velcro closure.