Tumble dry low Great Fabric: 5.3-ounce, 100% cotton – Tweed is 50/50 Cotton/Polyester Great Construction & Athletic Fit: Double-needle sleeves and hem. Taped neck and shoulders. Seamless double-needle 7/8 collar. Order one size larger if you prefer a loose fit. Awesome Durability: Printed with industry leading techniques and premium inks to ensure highest quality and durability. Colors won’t fade, crack, or peel. Machine wash cold, tumble dry low, non-chlorine bleach only. This Star Labs t-shirt features the logo of Star Labs, the fictional research facility and work place of Barry Allen.