Case of 500. The Boxed 1.77 Mil Poly Apron is a waterproof apron which features heavyweight polyethylene construction. Being non-penetrable by fluids, these white aprons provide a tough protection from chemical spills in a non-toxic work place, and are acceptable for use in USDA inspected establishments. Accompanied with extra long ties, this full-size apron can be worn easily by users of all sizes while making adjustments according to their preferences. Perfect for use in food processing industry and clinical facilities, these Boxed 1.77 Mil Poly Aprons are a must-have to protect restaurant staff's clothing from spills and stains.