Made of stainless steel, it is durable and resistant to wear and high temperature. The exquisite plating process can show your logo well. The product is polished, smooth, and burr-free, not easy to scratch the mouth, and safer to use. High-quality workmanship, tight and durable. The products can be widely used in the fields of maintaining order, traffic command, controlling the situation, rescue and disaster relief, survival and assistance, recreation and sports, as well as mines, harbors, construction, and so on. Measuring 1.7*0.79 inches, this custom stainless steel outdoor travel whistle. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Portable, durable, practical for daily use.