Chemical-resistant aprons protect workers from hazardous chemicals and fluid splash. Some aprons provide full-body coverage down to the knees, while others cover the torso and upper legs. They are made of durable materials such as vinyl, polyethylene and ethylene vinyl alcohol (EVOH). Vinyl resists acid, oils, grease, alkalis and solvents. Polyethylene and EVOH resist alcohol, ketones, chlorines and esters.