MFLABEL 40 Rolls 4x6x250/roll Direct Thermal Labels for Zebra 2844 3842 Eltron UPS Usps 1w PCS Label size: 4"x6", 250 labels per roll, total 40 rolls Do NOT compatible for Dymo 4XL printer Good Quality Material. Resist scratches, water, dirt, dust and grease. With premium raw material, our label is waterproof, durable and printing clearly Minimum application temperature: 50; Service temperature range: -59~+149