Ski jumping is practiced in certain areas that are reserved exclusively for ski jumping. Sun Peaks Resort is a nearby ski and snowboard hill. Freestyle skis are used by skiers who ski terrain parks. Sintered ultra high molecular weight polyethylene materials are used as ski and snowboard base materials. Great Barrington is the location of the Ski Butternut resort. It also offers satellite maps and has information regarding ski resorts. He held his lead to the summit finish at the Peyragudes ski resort. The first depiction of a skier with two ski poles dates to 1741. Boulder Freeride organizes a number of ski trips each year. Longer v-shaped segments fit into grooved rods called wear rods under each snowmobile ski. In 2010 Vail Resorts began using UHF Passive RFID tags in ski passes. It offers over 150 ski lifts and 200 kilometres of ski routes. Park City is home to the United States Ski Team. Ben Nevis is becoming popular with ski mountaineers and boarders. Bindings connect the boot to the ski.