If you are an outdoor person, you may consider having your name , person to contact and tel number, allergies (if any) and blood type. These information are useful for emergency. 

School excursion

Dementia patients

For your children, these tags are handy if they go out of your sight when you are outdoor. 

For corporate gifts or personalized gift, you can have your favorite logo or moto on the tag. 

.....more to come...