Today only, Aug 28, 2013, CowBoom has the H20 Audio Interval 4G Water-Resistant Case for Apple iPod shuffle, model no. INT4-BK, for $34.99 (99.99 – 65 instant savings) for a limited time. Shipping adds $5.

The Interval Waterproof Headphone System is used by gold medal swimmers Natalie Coughlin and Michael Phelps, Interval helps you swim longer and train harder by providing the soundtrack to your next swim session. It’s sleek waterproof case and integrated waterproof Surge 2G headphones attach to practically any swim goggle making it a low profile, hassle-free way to stay motivated during your next swim. It is waterproof up to 12ft/3.6m, is compatible with the iPod shuffle 4nd gen, and attaches easily to most swim goggles. There is an integrated control pad that allows for control of the iPod shuffle while in the water and is acoustically engineered for exceptional clarity and bass. It includes 5 sets of Elastomer earplugs (size XS – XL) to provide an individualized fit and watertight seal.