• Titanium Alloy
• Outdoor decor: makes and whistle loud crisp and higher tones, good volume, blow vigorously,safety whistle
• Sports whistle: workmanship, reasonable structure, professional and practical, can bring you convenience,hiking whistle
• Teacher metal: with great sound penetration, can be easy to whistle and make a loud, clear sound, you can quickly catch the crowd's attention anytime you want,basketball whistles
• Keychain: best your teachers, referee, teachers or your friends who are the fan of outdoors activities,referee metal hanging decor
• Football referee whistle: metal whistle can be a great friends and family, they will be happy,survival whistle