The glow in the dark paracord survival ID bracelets are designed for your safety in mind. Rarely do we think of accidents happening to us or a loved one until it does. This emergency bracelet is made of super durable cord that could be used for tourniquets, securing, splints, trapping, fishing and dozens of other survival uses. The built-in whistle on the buckle is an immediate way to call out for help. Another plus to the paracord ID bracelet is the metal does not touch your skin. This emergency cord bracelet is ideal for those allergic to metals! This bracelet is compatible with the ICE ID tag and the Contempo Medical ID Tag.