ZipNFC 30mm Square Disc Tag in White HARD PVC plastic with strong 3M glue and very thin. These are about 0.9 mm thick and the NFC technology is completely encased in PVC so waterproof and weather proof. This version has the high capacity NXP NTAG216 chip in it

These are manufactured for business and used for commercial use so very strong and durable as well as having a strong 3M adhesive applied. They also have an excellent reading distance. They are weather proof, waterproof, dust proof and can be outside as well as inside. 

Please note this version will not work on metal surfaces but we do have the same product in related products below that does