WHAT YOU GET--- 36 count black thickened plastic whistles with lanyard. LOUD CRISP SOUND--- The whistle has a LOUD CRISP SOUND. You can use it easily and effectively in any situation. HIGH-QUALITY MATERIAL--- The plastic whistle is made of thickened green plastic. They won't break easily!! durable than other plastic whistles. WIDELY USE--- These whistles bulk are for referees, coaches, teachers, , , , school, , give etc. GOOD SERVICE--- our whistles are satisfaction guaranteed. Please feel free to contact for anything and we usually respond within 12 hours.