Grey Mailing Bags 20×26" (508×660 mm) – Self-Seal Recycled Postal Bags Quantity:500 keep 9×12" for slim items

keep 9×12" for slim items and 12×16" for bulkier picks

At 28×30"

Multiple clothing items in one shipment

Eco premium: 60 µm film made from 100% recycled LDPE (code 4)

Whether you're processing hundreds of parcels each week or preparing for peak periods such as Black Friday

Grey Mailing Bags 20×26" (508×660 mm) – Self-Seal Recycled Postal Bags Quantity:500 keep 9×12" for slim itemsGrey Mailing Bags 2026" (508660 mm) give serious room for pillows, bedding sets, bulky textiles and larger retail boxes while keeping parcels lightweight. Made from tough 60 m co extruded, 100% recycled LDPE, these self seal postal bags are moisture proof water resistant, fully opaque for privacy and recyclable via UK soft plastic schemes. Most loads at this size ship as Royal Mail Medium Parcel or with couriers (Evri, DPD, Yodel). Check dimensions on