... other printings is available per your demands. Colour in options, perfect apperance for mailing items, colour in options: grey, white, black, ... blue, neon green, orange, so we can meet any colour. Customized size/shapes are welcomed.Seamless bottom affords additional cushioning ... are 100% Opaque. Accepts address labels, Smart Stamp and permanent marker pens. Postal bag made of bubble/paper/poly