Lululemon Define Jacket Whether you're up for adventure or ready for downtime, our fan-favourite Define Jacket, powered by Nulu™ fabric, has a feel-good fit that can do it all. feels buttery-soft and weightless, nulu™ fabric So buttery soft, it feels weightless Four-way stretch Sweat-wicking Breathable Added Lycra® fibre for stretch and shape retention features Zippered pockets Thumbholes and Cuffins™ keep sleeves down and chills out Locker loop for easy hanging Zipper garage keeps chafe in check Elastic zipper pull doubles as an emergency hair tie Has a slight highlighter mark on sleeve cuff