Durable & Stretchable. For single use only, micro textured surface and smooth surface. Powder-free, synthetic rubber copolymer of acrylonitrile and butadiene, specification meets international standard. Ambidextrous, rolled cuff, easy to put on and take off, highest comfort Not easy to pierce, durable, resisting acid, alkali, oil, dirt, high temperature and special chemical medium. Specifications : Material: Nitrile Butadiene Rubber (NBR). Grams – (3.5g) Package: 100pcs/box Glove sizes Extra-small, Small, Medium, Large, Extra-large.