[ Authentic MUNBYN Labels ] 4"x 6" (101.6mm x 152.4mm). 500 shipping labels per stack. Packed in a kraft carton to prevent damage. Tips: It is only suitable for thermal printers, not laser or inkjet printers. [ BPA/BPS FREE ] BPA (Bisphenol A) is an industrial chemical. It can cause endocrine disorders and have certain effects on people's health. MUNBYN Direct thermal paper has passed RoHs certification. It has been tested that the paper does not contain any carcinogens such as BPA or BPS. [ Waterproof and Oil-proof ] Smudge-Free and Resists Scratches, Water, Dirt, Dust, and Grease. Blank 4x6 mailing label with the perforated line for easy peeling. [ Fade Resistant Reliable ] The thermal labels are made of upgraded material that prints crystal clear images and easy-to-read barcodes. brighter than the leading brand and significant resistance to smudges and scratches. [ Strong Compatibility ] The printer labels are perfectly compatible with MUNBYN, Rollo, iDRPT, Polono, Jiose, K Comer, LabelRange, OFFNOVA, JADENS, Phomemo, NefLaca, and other direct thermal printers without the hassle of sheet waste, or jams. [ Quality-Our Priority ] MUNBYN Provides free lifetime customer support via live chat, phone calls, emails, and remote-desktop operations. All products carry our 100% satisfaction promise. [ Multi-platform Compatible ] Print shipping labels and internet postage labels for transportation platform and e-commerce platform. Such as FedEx, USPS, UPS, Shopify, Etsy, Amazon,, PayPal, Poshmark, Depop, Mercari, etc. [ Ultra-Strong Adhesive ] Peel-and-stick extra-large labels with strong self-adhesive backing. They use premium-grade and powerful adhesive that allows each label to stick tightly to any packaging surface for a long time.