The Slap Flexible Wristband For iPod Nano ($25) is a great alternative to the Hex iPod Nano Watch Band. The Slap for iPod Nano is a memory-metal wristband with soft silky silicone. Slap’s flexible, spring-steel band lies flat and rigid until you slap it onto your arm. The Slap band self-adjusts to a comfortable fit, exactly your size. The Slap leaves the headphone port open so you can plug in and listen your Nano at any time.