Blow lightly into a small mouthpiece and it makes a very loud noise, great for parties & sporting events, soccer & American football games, baseball games! Variable sound size: The collapse design allows for pitch variation. Easy to carry, it can be folded into 9 inch long, the right size is easy to carry fit backpacks, totes and duffels, store without taking up too much space. Package includes: 6 x Collapsible horns Specifications: Material: Plastic Color: Blue ? Size: Approximately 21 inches long before folding, and 9 inches long after folding. Note: The color may exist slight difference due to different screen display. Manual measurement, please allow slight errors on size.