This felt board can be used as , office/school/apartment memo board, etc. Tips for installation 1.Wipe the wall and the is smooth and dry before adhering the felt board. It can stick on glass too. 2.Due to strong adhesion, the felt board cannot be adjusted easily. Be sure its in the right spot. 3.In cold environments, heat the adhesive back with a hair dryer for 2 minutes to regain adhesiveness. 4.For better adhesion, press firmly for 10 seconds. The original adhesive is permanent and may damage painted walls or wallpaper if removed. If you want to reuse the board, attach a removable adhesive to the hexagons. colour:Gray Yellow Series Material:Felt and foam size:120*140*5mm Package Contents: 5*Hexagon Felt Board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.