Made of aluminum alloy, the whistles are not easy to fade, can serve you for a long time,mini and light but very loud that can be heard for far distance. Can serve you for a long time. Durable aluminum alloy body comes with keychain ring. Count on quality and safety. The Hiking whistles are equipped with a annulus that can be hung on the key, make a large and bright sound that can be heard at a distance, available for a variety of emergency situations, can let others quickly confirm your location and get a quick rescue. Nice for sporting events, camping. Custom logo is available,price for over 10000pcs is based on sea freight.
