Lululemon's Sweat Session 1/2 Zip *Silver. It's 6am on a Saturday, and your running buddy just bailed. This performance pullover has your back. Made with super warm and sweat-wicking Rulu™ fabric, anti-stink technology and reflective details, this cozy pullover helps to cut the chill (and the stink) when you're hitting the trails. Its really comfortable and soft too!