Build a castle or a city! Let your creativity take over! Contains 30 pieces with 10 shapes. There are 6 color blocks and 18 natural blocks. Contains 30 pieces with 10 unique shapes 6 colored blocks and 18 natural colored blocks Children will develop problem solving and mathematical thinking through block play Sustainably made in Thailand using chemical-free rubberwood, formaldehyde-free glue, organic pigments and water-based dyes. For 18 months and up.