Just as joggers and athletes need to stay motivated during training through their favorite music, Waterfi gives the user an opportunity to enjoy music whilst engaging in water-sports. The San Diego-based company has engineered a unique process to waterproof the otherwise vulnerable gadget. A special dual-layer coating on the inside of the devices to fully shut out liquids, good for water resistance down until 100ft. Bundle packs are offered with waterproofed ear phones, and a choice of various colors to suit your style. For the iPod Shuffle, there is an extra option to make it shockproof as well.