stainless steel, nylon; Whistles with rope--professional and practical whistle for referee and school athletic meetings, portable whistles; Referee whistles--lightweight with keychain and rope, they can be very convenient to carry and use, racing whistles; Whistle pendants--lightweight and equipped with a lanyard, it is easy to be hung on the neck and convenient to store, outdoor sports whistles; Football whistles-- appearance design, designed for instructor, trainers, and athletes well, multi-function whistle; Outdoor whistles--can be the your friends who are the referees or instructors, sports whistles

What's in the box
2 x Whistles