The SMARTFLEX 400 Series BK401 gloves come made to grip against a multitude of oils. These gloves are made of a black nylon with a grey polyurethane coating. However, the wrist and back of the gloves are uncoated, allowing for ventilation. They also come with a full knit wrist, concealing your hands from dirt that falls in. The gloves can be used for many types of work including automotive, construction, warehouse applications and general assembly.