Aprons and Sleeves Apron - Polyurethane 100% polyurethane in 5.5 mil thickness. Yellow. Apron - White Single-use apron made from spun-bond prolypropylene repels water and oil. Heavy Duty Apron Made with 20 mil neoprene, this apron is coated on both sides for excellent strength and durability in tough working environments. Sleeves - Polyurethane 5.5 Mil, 18 inch long reusable seamless sleeves with elasticized ends for complete forearm coverage SKU: C5-39D368B © 2019 GP Supply Ltd.