The Poly Mailers 30×6” Self Seal Plastic Shipping Bags Envelopes 25 Count are custom bundle packaging items that are ideal for businesses and industrial use. With a size of 6 x 30 inches, these self-seal plastic shipping bags provide a convenient and secure method for packaging and shipping items. The lot size of 25 ensures that you have an ample supply of these envelopes to handle all your shipping needs efficiently.