Our 180 x 235mm MailJacket Lite cardboard mailers are a fantastic choice if reducing the cost of postage and packaging and reducing your environmental impact is your focus. With an opening on the long edge and pre-folded depth creases, these cardboard mailers are quick and easy to pack, creating a snug, secure packaging solution for your lightweight items. Featuring a peel and seal closure for a tamper-evident seal and a plastic-free easy ripper strip, these cardboard envelopes are quick to pack for you and easy to open for your customer. Made with 100% post-consumer waste and 0% plastic, these 300gsm rigid mailers are recyclable, biodegradable and plastic-free.