Our 180 x 235mm MailJacket Lite cardboard mailers are a fantastic choice if reducing 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 tear open 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.