Eastern Mountain Sports (or EMS) is an outdoor clothing and equipment retailer in the U.S. Northeast headquartered in Meriden, Connecticut. EMS sells outdoor equipment and clothing from both name brands and its own EMS line. The company also has a set of EMS Schools that offer classes in rock and ice climbing, kayaking, stand-up paddle boarding, trekking, and skiing. The EMS Schools headquarters is located in the White Mountains in North Conway, NH; and has other locations near the Adirondacks in NY, etc.