Padded envelope: The outside of the envelope is made of brown paper. The inside of the envelope consists of a polyethylene bubble envelope that protects the contents from possible shocks.Durable brown padded envelopes with bubble paper inside.Easy adhesive closure: the envelope flap is self-adhesive, making it easy and effective to close. This self-adhesive closure is offered by the entire range of our padded envelopes.Quality paper: ofituria quilted envelopes are environmentally friendly envelopes, with paper from forests with sustainable environmental management. All components are 100% recyclable.