We've taken our obsession with muslin to the next level with our adorable, breathable baby clothing. By adding a touch of spandex to our natural cotton muslin, we created a super comfy fabric that moves with baby while helping reduce the risk of overheating. This short sleeve kimono one-piece is designed so baby can stay covered on top during diaper changes. Plus, just like aden + anais' other muslin products, it's machine washable and stays soft wash after wash.