1. Folded design Thermal shipping label size: 4" x 6", 4000 Labels per stack, 1 stack = 4000 Labels, with perforated line, BPA Free. The folded form is convenient for quickly and easily being inserted into the printer, saving time compared to roll labels. Additionally, the foldable structure can prevent curling and ensure smooth printing, with perforated lines making it very convenient to use. 2. High-quality materials The label is made of high-quality, BPA-free thermal paper, environmentally friendly and durable. The label is pure white, with clear printing and easy scanning. It has excellent waterproof, oil-resistant, scratch-resistant and dustproof properties, ensuring that the information on the label remains intact and legible during transportation. 3. Strong adhesive The label is made of strong self-adhesive, which can firmly adhere to various surfaces - including cardboard, plastic and packaging materials. This strong adhesion prevents the labels from falling off during transportation. 4. Wide compatibility Compatible with 4" wide thermal printings, like the models: intended for Zebra ZP450, LP2844, LP2844Z, GK420d, GK430t, GX420d,GX430t, GoDex EZ-DT4 and others.Suitable for barcode, FedEx, DHL, Amazon, eBay, PayPal shipping, transportation and other suppliers multifunctional use, etc. (Not Compatible with Dymo) 5. Storage method The labels should be stored in a cool, dry and well-ventilated place, away from direct sunlight and chemical substances. The correct storage method helps maintain printing quality and prolongs the lifespan of the labels. Label size: 4" x 6", 4000 labels per stack, 1 stack, Perforated for Easy Tear-off. Our Fan-fold labels are made of superior quality material, designed to provide you with high-resolution prints and fast processing. The face stock has a white surface for good contrast bar codes and text. These blank mailing labels are great for Barcodes, UPS, FedEx, DHL, Amazon, eBay, PayPal Shipping and other vendors. Works with 4" wide thermal printers, like the models: intended for Zebra ZP450, LP2844, LP2844Z, GK420d, GK430t, GX420d, GX430t, GoDex EZ-DT4 and others.