When your between vacations of exploring the wonders of the ocean National Geographic knows you need to keep in shape even when you out of time on business. These Sea Horse Exercise Swim Fins are compact and great to bring with you wherever you travel. Fin is constructed of three different materials to achieve the appropriate thrust-to-energy exertion ratio. This composite design maximizessnap and flex of the blade. Fin is equipped with a soft and comfortable foot pocket.