For the casually athletic, or just the plain casual. Slightly heavier than our original Air fabric, this quarter zip is stretchy, breathable, and features yard-dyed custom stripe details. Snag one, it'll be perfect for layering all season long. We took our insanely light and breathable Air fabric and made it slightly warmer for our outerwear styles like this. Don't worry, it's still incredibly comfortable and stretches just like the original. Charles is 6’2”, wearing a Medium, and is from Canada but hates the cold.