Introduction from Merrell: (this is what Merrell say about their Ascend Glove)
Cushioned for longer runs and more demanding terrain, our lightweight and durable Ascend Glove shoe stays true to your natural stride with its barefoot profile. Charge over mountains and rocky terrain with its aggressive, grabby lug design and TrailProtect pad for extra off-road support.
• Fabric and synthetic upper
• MotionMesh engineered for optimal breathability and range of motion
• Breathable mesh lining
• M-Select FRESH naturally prevents odour before it starts for fresh smelling feet
• Wash as needed in cold water (gentle cycle). Air dry.
• 0mm Drop / 6mm Cush/ 10.5mm Stack Height
• TrailProtect pad in the forefoot and heel offers additional support for the roughest terrain
• Non-marking outsole
• Vibram® outsole
(See more at: http://www.merrell.com/US/en-US/Product.mvc.aspx/32155M/78577/Mens/Barefoot-Trail-Run-Ascend-Glove#sthash.9HLaI5iJ.dpuf)