Aprons & Gowns Apron - Polyurethane 100% polyurethane in 5.5 mil thickness. Yellow. Apron - White Single-use apron made from spun-bond prolypropylene repels water and oil. Gown Polyethylene with Thumb Loops Polyethylene gown with smooth finish, high neck with safety release, and built-in thumb holes. Heavy Duty Apron Made with 20 mil neoprene, this apron is coated on both sides for excellent strength and durability in tough working environments. © 2019 Guelph Paper & Cleaning Supply Co. Ltd.