Lululemon Legging Fabric Guide: Breaking Down My Favorite Leggings lululemon is my favorite athletic wear line, I think that much is clear! I get so excited every time I shop there because I know I’m gonna walk away with some incredible, high-quality piece to love. But if you think that all lululemon workout gear is made alike, I have news for you—it’s not! I mean, it’s all amazing quality that’s for sure. But the actual materials they offer vary from piece to piece, so I wanted to break them down for you today so you know exactly what you’re buying when you buy it. Editor's Note: I wear size 4 in all lululemon leggings. 1. Align Leggings: Nulu Fabric The Nulu fabric is what the beloved Align leggings are made of, and it truly feels like butter on your skin. If you’re into feeling like you basically don’t have pants on at all, this material is your best option. Not only is it breathable, but it stretches in every single way so you can mov...