Tyler Boe Vicky dress NEW. This best-selling knit dress has a mock neck with puff sleeves for an instantly elevated look. The best part about this fabric is it's wrinkle-free, so you can wear this all day long without a worry. Elbow-length puff sleeves Mock neck 86% Polyester, 12% Rayon, 2% Spandex Machine wash cold, lay flat to dry.