Made of stainless steel material, the whistle is solid and durable. With loud sound, it is suitable for outdoor sports, like hiking, camping, climbing, etc. It is also for daily exercise, like pet training, football, basketball, soccer, hockey or others. With mini and portable size, hanging keychain ring decor, it is easy and convenient to take it anywhere you want. Features -Color:Silver -Material:Stainless Steel -Size:5.50X1.00X1.00cm/2.16X0.39X0.39in - Delicate stainless steel whistle is very loud and easy to blow. carving, long serving time. - Suitable for outdoor activities, such as hiking, fishing, camping, boating, hunting, also can be a , pet dog training, etc. - Football Whistle is small size, light weight and easy to carry, you can take it with you wherever you go. - Sports Whistle can be a great choice for friends and family. It will help them. - workmanship, reasonable structure, professional and practical, can bring you convenience. Package list: 1 x Whistle