UHF RFID 4X4 inch LablesALIEN ALN-9640-FWRC tags (SQUIGGLE INLAY, HIGGS3, FC, CLEAR).Label paper material ? Pure white ( capable of sticking onto cartons)Paper thickness ? 70-80 GSMRelease paper thickness ? 65 GSMAdhesive ? Will stick to cartons with Shelf life of 1 year.