Personalized RN Really Nice Long Sleeve T-Shirt. RN really nice is a funny twist on the acronym for registered nurse and a unique gift design for birthdays, holidays and graduation. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL