Clips onto belt loops, zippers, purses and backpacks. Loud whistle, great for sporting events, camping & hiking. Carabiner included, so it clips on to belt loops, zippers, purses and backpacks. Waterproof, metal ID holder included. ⚠ WARNING: This product can expose you to LEAD, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.