The Calm Shirt is a long-sleeve sleep top made from our sustainable TENCEL™ Micro Modal that is 3x softer than cotton and more absorbent, providing an exceptionally smooth touch for a restful night's sleep. The relaxed fit and round neckline move naturally with the body, and the fabric's temperature-regulating and breathable properties work passively through the night — no adjusting, no overheating. Ethically sourced and hypoallergenic, it's the kind of quality you feel from the first wear.