Dimensions: 11*16 cm/12.5*17.5 cm/13*19 cm/10.5*15.3 cm - 130 g/m² Kraft paper: 100 kraft paper envelopes with wet glue. Note: Natural glue: Moisten the adhesive layer on the top flap carefully and press it down while it dries! Versatile: Perfect for personal or business correspondence, invitations, wedding and birthday cards. They can be used not only in the office, home and schools, but also in shops, post offices, gift shops, restaurant reviews and more. Please note: 1. Due to different lighting and screen settings, the product color may differ slightly from the picture. 2. Please allow a slight difference in dimensions due to manual measurements. [Friendly tips] Returns without reason cause unnecessary resource and energy consumption. Please contact our customer service if you experience any problems after receiving your order, and we will do our best to help you solve them. If you are still not satisfied, it is never too late to return the item after contacting us. Thank you again.