Water Blocks — PlanToys

These 6 Water Blocks come in 2 shapes and 3 water colors so children can put the blocks together to learn about new colors. Lay flat or stack on their sides to see how the liquids go from covering the whole window to only a portion. Sustainably made in Thailand using chemical-free rubberwood, formaldehyde-free glue, organic pigments and water-based dyes.