CCustom Medical ID,Medical Alert,Emergency,Safety Kids,If Lost Please Call,Autism Awareness Shoe Charm,Shoe-lace,Bag Tag with QR Code Product can be customized with your business QR Code. Please send us your readable QR code through message or email : photo@hamacharms.com *Product size: Shoe Charm 1.2 ~ 1.3" / Pin: ~ 1.6" * Material: Made of 3mm Acrylic ( Please note that these are NOT soft, flexible like PVC charms ) Shoe Charm comes with back button and ready to use. We also provide Small back button ( 10mm BB ) for Toddler's Crocs ( Crocs' size C2-C10 ) and Standard buttons ( 12mm BB ) - PLEASE UPDATE IF YOU NEED SMALL BUTTONS FOR TODDLER'S CROCS. Products can be customized with other background color / text color. Please note that these are NOT soft, flexible like PVC charms.