North Silver Shield/4H Gloves protect against more than 280 chemicals: alcohols, aliphatic, aromatics, chlorines, ketones, esters. with a patented 5-layer laminate of high-energy polymer (EVOH) and a low-energy polymer (PE) compacted into a 2.7mil thickness. Low cost, disposable gloves do not have to be recycled and can be readily available to workers. Does not contain chemical accelerators that can cause allergic reactions. Can be used as a secondary inner glove. Allows worker maximum protection in heavy-duty jobs where the dangers of mechanical damage to gloves are high.