• Stainless Steel
• Sports whistle--the little whistle is really deafening loud and can still be heard from a distance,whistle for teachers
• Safety whistle--stainless steel whistle can be a great friends and family, they will be happy,emergency whistle
• Survival whistle-- your teachers, referee, teachers or your friends who are the fan of outdoors activities,whistle hanging decor
• Whistle prop--makes and durable whistle loud crisp and higher tones, volume, blow vigorously,volleyball whistle
• Whistles for coaches--whistle is also a nice metal craft, delicate design, thus you can suspend it on anywhere you want,whistles bulk