21×24 mailing bags • extra-large grey poly mailers • waterproof postal bags • recyclable mailing bags UK • Royal Mail Medium Parcel packaging • bulk grey mailing bags • eBay and Amazon shipping bags
TSC DA/TE and other 4" printers
simplifying the packing process and saving time
Add simple corner pads for sharp edges
making this size a reliable choice for peak-season dispatch and returns-friendly packing
Grey Mailing Bags 28×34" (711×864 mm) – Self-Seal Postal Bags Thermal 21×24 mailing bags • extra-largeGrey Mailing Bags 2834" (711864 mm) give extra length and volume for curtains, long textiles, duvets, oversized pillows and large retail boxes while keeping parcels lightweight. Made from 60 m co extruded, 100% recycled LDPE, theyre moisture proof water resistant, fully opaque for privacy and recyclable through UK soft plastic schemes. At this size, most loads ship as Royal Mail Large Parcel or by couriers (Evri, DPD, Yodel) check limits on the Royal