Size medium Waterproof & Breathable: The Omni-Tech shell and mesh lining are designed to keep rain out while allowing excess heat and moisture vapor to escape. Packable Design: This style of jacket can often be packed into one of its own zippered hand pockets for convenient storage and transport. Adjustable Fit: It includes an attached, adjustable storm hood, adjustable cuffs, and a drawcord-adjustable hem to seal out the elements. Material: The shell is typically made from 100% nylon 2L full dull plain weave material with a 100% polyester fine mesh lining. Spots on inside lining shown in photo