Thin Blue Line Tank Shamrock . The front and center design of these Men's Tank Tops developed by Thin Blue Line USA feature a rugged shamrock with a solid blue line running through the middle proudly displaying the Thin Blue Line emblem. ThisThin Blue Line Shamrock Support Tank w/ Back Placard is washable and the perfect lightweight layer to keep you cool on those hot summer days. Pick up your official Thin Blue Line Support Tank today to wear with pride and show your support for police officers everywhere you go. Specifications for Thin Blue Line Tank Shamrock: Manufacturer: Thin Blue Line Apparel Fit: Regular Gender: Male Package Contents: Thin Blue Line Tank Shamrock