B13874-10 / 874-10 GLOVE BUTYL SIZE X-LARGE SMOOTH Best® Butyl and Butyl II Gloves Flexible yet durable, synthetic rubber Butyl gloves offer excellent resistance to esters and ketones, and the highest permeation resistance to gases and water vapors of any protective material used in making gloves. They do not provide the physical strength of natural rubber, but the injection-molded high quality butyl rubber used in these unlined 14" gloves ensures consistent quality, uniform thickness, flexibility and tactile sensitivity. Smooth heavyweight 25 mil Butyl and 14 mil Butyl II gloves feature a rolled cuff. Sold per pair.