Window Building Blocks, large

Each building block has two window panels: One colored or mirrored and one transparent. One of the panes in each of the large building blocks can be opened. The blocks can also be filled to create additional effects, e.g. with sand, granules or beads etc. A magnetic fastening ensures that the seal is tight. Contents: Each set contains blocks in 3 sizes and in the following designs: mirror/clear acrylic, clear acrylic/clear, red acrylic/clear, blue acrylic/clear, green acrylic/clear, yellow acrylic/clear.