The Worker Safety Universal I.D is designed to allow paramedics / first responders quick access to a workers medical information and emergency contact numbers in the event they are involved in a serious onsite accident or medical emergency. This NEW I.D system is a universal fit product that allows the worker to carry /store their ID in a number of different ways to suit many types of industries and work environments. The WSID-05 is ideal for workers in Oil & Gas, Construction, Heavy Industry, Railways / Highways, Utilities, Mining & more. The WSID-05 can be fitted to: Boots / Shoes Hard Hats Belts Harnesses / Fall Restraints Back Packs Zipper pulls The unique shock-cord fitting system allows this product to be so flexible in how the system is used. The waterproof ID card within the system allows up to 500 characters of information to be stored.