The tough .45mm PVC coating on commercial-grade polyester/cotton fabric resists everything from fish oil to barnyard acids and machinery oils. The material is also designed to resist the abrasive punishment of ropes and construction gear. We used a polyester/cotton inner fabric because it efficiently pulls perspiration away from your body allowing you to remain dry and comfortable. All seams are sewn and welded to be 100% guaranteed waterproof and nearly indestructible. Unlike many commercial-grade rainsuits, these will stay flexible even in the coldest of conditions. The bib is reversible (turn it front to back) so you can wear it twice as long; extended hem with button closure at the waist makes them easy to get in and out of. The suspenders are snag resistant and very comfortable. Specify waist size: M (32-34), L (36-38), XL (40-42) or 2XL (44-46) from the selection box above.