WHAT YOU GET--- 36PCS black thickened plastic whistles with lanyard. LOUD CRISP SOUND--- The prime 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!! More durable than other plastic whistles. WIDELY USE--- These whistles bulk are great for referees, coaches, teachers, training, survival, emergency, school, sports, give away etc. GOOD SERVICE--- All our whistles are 100% satisfaction guaranteed. Please feel free to us for anything and we usually respond within 12 hours.