These glove box gloves are made of neoprene. Neoprene is a synthetic rubber that resists a variety of substances including oils, acids, alcohols, fats, ketones, solvents, greases, and petrochemicals. It is flexible and provides excellent tensile strength and heat resistance. Thicker gloves provide better protection and have a longer lifespan, but are less tactile than thinner gloves. Gloves are permanently installed in the box and workers put their hands in the gloves from outside the box.