Eco-friendly snake structure puzzle cubeAn elastic string with two distinct colors connecting each wooden block.To create a cube, the disorganized blocks in a structure esembling a snake must be joined. These are handcrafted toys; you won't eceive machine-made finishes. Some of the cube blocks have a aturally occurring usted wooden color. The most environmentally and biodegradably friendly products. Sharpen your child's hand-eye coordination. To ensure that children can safely use the toy puzzle vegetable dyes are used during the coloring process..