We can customize this envelopes product, the feature of it is surface Handling: Embossing, Hot stamping, Vanishing, UV coating, Spot UV, Glossy Lamination, Matt Lamination, Film Lamination etc. The material of it is :80/90/100gsm paper or kraft bubble,ordinary paper, black cardboard, paperboard,kraft paper,glossy coat and the size of it can be customized.It can be used in coin envelopes, shatter extracts envelopes, kraft envelopes.