1)Blackboard sticker, Chalkboard sticker stick on wall 2 ... erase it 3) material: pvc Blackboard sticker,Chalkboard sticker,Wall sticker,wall decal,Removable blackboard / Home decoration blackboard1. Change ... the size of blackboard;5.Chaped o diffierent design like cat, cow, pig, etc. suitable for children's brains development ... 0.20mm,0.30mm With Thickness. self adhesive children use chalkboard sticker