Men's 100% Silk Black Vaccine Medical Doctor Necktie Tie Neckwear The mission of every Infectious Awareables tie is to generate interest, discussion, even excitement about serious public health issues such as this silk Vaccine tie in black Made of 100% Silk Dimensions: 3.75'' x 58.0'' "Design illustrates antigens, antibody production and vaccination needle - all part of the process to create immunity."