Personalized Sleep Disorder Specialist SDS Adult Sweatshirt. Sleep Disorder Specialist Adult Sweatshirt - Heather Grey has worlds best logo on this thank you gift idea for a SDS. Stay warm and stylish with this classic adult sweatshirt, perfect for everyday comfort. Crafted from soft, durable fabric, it features a relaxed fit for added coziness. Whether youβre lounging at home, running errands, or enjoying outdoor activities, this versatile sweatshirt is a wardrobe essential for any season.