Envelopes
ODL Packaging 1000 C6/ A6 Board Backed Envelopes Manilla 162mm x 114mm
115gsm Kraft Paper Front /550gsm Back Board Hot melt peel and seal strips for a strong self seal Manilla Basket Weave printed Please do not bend in Red 115gsm Kraft Paper Front /550gsm Back Board Rigid board keeps important documents safe
https://www.bizrate.co.uk/envelopes/odl-packaging-1000-c6-a6-oid30524063409.html