Sustainably-crafted bamboo blocks that support little ones in their development while also nurturing an eco-friendly lifestyle. 18 bamboo blocks with letters, numbers, 4 elements of the earth and 4 season symbols help children develop their language and communication skills, concentration ability, fine motor skills and hand-eye coordination. Learn to build, stack, spell, count and categorize! Individual cube dimensions: 1.5 L x 1.5 W x 1.5 H (3.8 x 3.8 x 3.8 cm). Suitable for ages 12 months and up.