NWOT. Size 8 Color: Black This form-fitting and functional 1.5mm Women's Patagonia Rl Front Zip Vest is a must have for those warmer water temps! Made of 85% Yulex natural rubber and even chlorine-free synthetic rubber, this front-zip vest is flexible and stretchy. Other features include: flatlock seams for durability and a front 6" zipper. The low-profile hem has a fused-edge waist which means X fits comfortably against the skin.