Yoga Sweat Headband

The surface of this high frequency stainless steel whistle is polished, smooth and comfortable, and will not scratch the mouth. And it will not rust, very clean and hygienic, safer to use. It is equipped with a lanyard, you can hang around the neck to carry. It has a separate plastic box packaging, small and easy to store. In addition, this whistle channel design makes it blow moderate, loud and clear whistle, can completely cover the crowd noise and natural environmental noise. It is widely used in maintaining order, traffic command, control the situation, rescue and relief, survival and assistance, recreation, sports and mines, ports, construction and other fields.