Nitrile is made from an allergy safe compound that feels a lot like latex but is much stronger, costs less, and is more comfortable to wear. It is a great combination of strength, comfort, durability and dexterity. Powder free gloves go through an extra process of chlorinating to ease donning. The 3 mil are considered a lighter grade option that is most popular with custodians, cleanroom workers and food-service workers. They come in sizes S, M, L, XL and 2XL. Each case is 10 boxes of 200 (2,000 per case).