Originally launched in 2013, the XT-6 is the preferred footwear of world-class athletes for ultra-distance races under harsh conditions.. It now returns with updated colors and materials, but the same level of cushioning, durability and descent control. - Cushioning: EVA cushioning protects your foot and ensures soft landings whether you’re hopping over rocks or paving stones. - Light & Durable Construction: The lightweight, streamlined construction features a mix of resistant TPU film and mesh designed to last. - Long-distance stability: The downhill chassis and lug geometry give you more stability, however far you go. - EndoFit : An internal fit sleeve designed to hug the foot in exactly the right places and provide a precise fit. - Agile Chassis System: ACS provides stability and dampening and works in concert with the EnergyCell midsole.