uPaknShip[25 pc]10×13 Flowering Cactus Designer Poly Mailers Shipping Envelopes. Condition is “New”. Shipped with USPS Priority Mail Padded Flat Rate Envelope. This listing is for 25 pieces of poly mailer bags in the Flowering Cactus Pattern in the 10 inch by 13 inch size. Poly Mailer Bags do NOT have a bubble mailer lining. Need a larger or smaller count? We have other listing available in different patterns and sizes. We have a yellow daisy, pink with pineapples, mini cactus print, and more! Also available in 6 inch x 9 inch mailers are solid color matte pink, semi-glossy blue, snake print, and mini cactus print.