NWOT Lululemon Rain Rules Jacket in Sage Size 0. Lightweight, waterproof, and breathable, this tailored rain jacket is the ideal everyday piece to keep you dry when you're on the move. Fully seam-sealed and made with waterproof, breathable Glyde fabric. glyde waterproof Glyde Waterproof fabric is breathable and jacket is strategically seam-sealed to keep moisture out. waterproof features Designed for: Office Travel Commute Ventilation: Back vent strategically placed to provide airflow Cinchable waist: Cinchable waist with a slim slide-and-lock toggle Cinchable hood: Cinch the hood to help lock in heat Zipper pocket: Store your stuff in the secure zippered pocket