Fabric (shell): 300D Polyester; Fabric (liner): 200D Polyester
Not all PFD's are created equal and there is no such thing as truly unisex PFD. I purchased the Moxie PFD by MTI Adventurewear for my wife and she absolutely loves it. It is very comfortable and has support in the areas where she needs it. She loves how it is light weight and not bulky or uncomfortable to wear, even on long trips and unlike prior PFD's that were very hot to wear, the Moxie is shear enough to avoid overheating
My old vest would get pushed by the seat back and end up irritating my neck. Not my Moxie. It also comes with a tethered safety whistle. Lastly, it closes with 3 clips, not a zipper. My vest is a L/XL, with a wide adjustment range.