Poly Mailer Bags 24 x 24 #8 - Pack of 250 Cheaper poly mailer bags with internal measurements of 24 x 24 and external measurements of 24 x 24.5 Tamper-evident opaque envelopes with a self-adhesive closure that allows for a more efficient and secure packing process Strong puncture-resistant material that s optimal for the shipment of apparel fabrics and other soft goods Poly-mailers tight heat-sealed seams supply a bonded closure enabling consumers to fully pack mailers to max capacity Space-efficient poly mailers that store flat in any compact area to better optimize warehouse space