Black Diamond Expedition 3 Ski Poles 100% aluminum: 18 mm (0.71 in) upper, 16 mm (0.63 in) mid, and 14 mm (0.55 in) lower & 100 mm (4 in) Powder Baskets 4-season extended foam grip with aggressive hooking point for manipulating bars and buckles Adjustable 4-season strap for ergonomic comfort with or without gloves FlickLock adjustability Trekking baskets included