Your medical ID necklace provides quick recognition of your medical conditions, which leads to faster and proper care in the event of an emergency situation. Most first responders and medical personnel are trained to look for medical ID's during emergencies! 316L stainless steel metal plate and chain. Waterproof, very comfortable to wear, waterproof and Low-allergy. Our Engraved words are large and can be easily read. Weight:16.5g; Pendant Size: 45*25.4*2.2mm; Chain length:60cm; Designed to be highly visible to emergency responders, but also with elegance in mind. Finally a medical alert necklace that is stylish and not an eyesore. Medical identification jewelry can save lives by providing first responders critical health. Note: Data are all measured manually, please allow for an error of 1-3cm. Due to differences in light and display, there may be a certain color difference, which is subject to the actual object received.