Product : Thermal Label Sticker Label Sizes 100X50mm 100mm x 70mm 100mmX75mm 75mmX100mm 100x80mm 50mm*25mm 60mm x 40mm 100x150mm 30mm x 20mm Material : Environmentally friendly thermal sensitive paper Features : Self Adhesive, Easy to Stick, Waterproof, Compatible for ：Printer with Thermal Printing Function Suitable for: Warehouse, Hospital, Market, Stores etc Waterproof not means the sticker pater is waterproof, just means the words keep clear even paper wet