(1 Tile (30cm x 30cm), A06) - Art3d Liquid Fusion Floor Children Develop Mat Shapes, 30cm X 30cm Yellow-Red

What is the thickness of each tile?

Will you get the same effect if mounted on wall? Or will gravity cause settling?

Are these like tiles you use in place of current flooring or do the have non slip backing so you can have them on top of a current floor?

how many come in a pack?