Our size 2 234 x 334mm MailJacket Lite cardboard mailers are ideal for quickly and efficiently packaging a range of lightweight items. Keeping postal costs low due to the lightweight design, these 300gsm rigid cardboard mailers are excellent for goods that need little protection during transit. With an opening on the long edge, pre-folded depth creases and a peel and seal adhesive closure, these lightweight cardboard envelopes are quick and efficient to pack, whilst the easy to use tear open strip ensures a frustration free opening experience for your customer. Made from 100% post-consumer waste and 0% plastic, our cardboard mailers are recyclable, biodegradable and ocean-friendly; making them an excellent eco choice for your despatch operation.