The product is a set of 2 black plastic sports whistles with a loud and crisp sound, perfect for safety use during outdoor activities such as camping, hiking, or sports. Each whistle comes with a lanyard for easy carrying and dimensions of 1.81 x 0.71 x 0.71 inches. These whistles are lightweight at 0.02 kilograms and compact with package dimensions of 2.6 x 2.52 x 0.98 inches, making them convenient to bring along on adventures.