Eco-bricks™ 90 Piece Natural Wooden Set: COMPATIBLE BLOCKS you can COLOR ON! Includes color pencils. Durable, beautifully crafted, and even compatible with most of the other major interlocking block brands (so you don't have to start your whole collection all over again), the Eco-Bricks™ 90-Piece set is a brilliant alternative to plastic block construction.Benefits: Natural, Biodegradable, FSC Certified Wood Construction Blocks. These interlocking blocks aren't just fun - they are friendly to the planet, too! Features: Compatible with plastic blocks. Encourages fine motor skills and environmental awareness. Assorted styles of natural blocks for endless design configuration. Natural blocks can be personalized with additional medias such as colored pencils, markers, crayons, and paint. Recommended Age 4+ Includes: 5 - 4 Dot Wooden Block Covers 20 - 4 Dot Wooden Blocks 50 - 8 Dot Wooden Blocks 7 - 8 Dot Wooden Covers 6 - 16 Dot Wooden Bases 2 - 16 Dot Axel with Wheels 10 Colored Pencils Packaged in a laser engraved wooden storage box. High-quality design for lasting durability. Note: Eco-bricks™ are made of wood. If placed in water or very high moisture is present in the air, bricks can loose or alter their function. Do not get them wet. Keep away from water. WARNING: CHOKING HAZARD - Small parts. Not intended for children under 3 years. Patent Pending