Come and see our amazing products. The whistle is made of aluminum with key ring. Easily attaches to their keys, purse or bag using the silver split key ring. It's excellent for camping, hiking and outdoor activities. The price includes one color one location printing cost and shipping cost to ca! Simply add your company's name, logo and advertising message before handing it out at tradeshows, expos, conventions and any other marketing opportunities to pop the top on your next advertising campaign! Welcome you rush order. 100% guarantee for quality, Pls confirm with us about the packing info, stock status and exact production time before placing your orders.