The exterior of the envelope is made of brown kraft paper. The interior of the envelope consists of a polyethylene bubble mailer that protects the contents from shocks during transport. The flap of the envelope is self-adhesive, facilitating an easy and effective closure. This self-adhesive closure is offered across our entire range of padded envelopes: both in large padded envelopes and in envelopes for small shipments. Ofituria padded envelopes are shipping envelopes that are environmentally friendly, with paper from forests with sustainable environmental management. All components are 100% recyclable.