A barefoot shoe for trail use. As with all Merrell barefoot footwear, the idea here is to give your feet and legs work the way they are intended to. This is achieved by making the footwear flexible and reducing the shock absorption to a minimum. They do, however, provide you shelter from abrasion and small sharp objects. - Surface: light and breathable microfiber and mesh materials - Rubber toe protector - New, environmentally friendly M-Select Fresh anti odor treatment - Very light structure - FloatPro midsole - Thin trail specific protector plate at the front offers a touch of extra protection by spreading pressure on a larger area - Heel and toe are at equal height - Vibram Ecostep Recycle out sole contains 30% recycled rubber - Surface and liner fabrics, insoles and laces are made of 100% recycled material It's wise to start barefoot exercise in small doses, so your muscles and tendons have time to get used to the challenge.