RunCase Running Armband for iPod Shuffle 4th Generation (4G) Compatible with 4th Generation iPod Shuffle (2GB) Strap available in 2 sizes Available in two sizes with adjustable Velcro Straps; Small fits arms 24-29cm in diametre, Large fits 29-41cm. iPod slots into the Neoprene pocket with a clear front, so the controls are fully visible Headphones can be used with the Shuffle through the slot at the back of the armband