This Vor-Tech� fabric is a double layer laminated fabric. The face fabric is a jacquarded nylon which is Teflon� treated. Teflon� repels oil and dirt. All seams are factory seam-sealed, giving this garment durable waterproof integrity. The Vor-Tech� membrane is micro-porous and laminated to the face fabric. The micro-porous membrane has two features: it allows perspiration to escape through the pores in the membrane without allowing water in, and also acts as a wind breaker. The lining is a combination of fleece and quilting, giving extra protection to body and the membrane. .