Eco-bricks™ are made from FSC certified sustainable wood, are biodegradable, and a renewable resource. The wooden blocks are 100% compatible with plastic blocks. Eco-bricks™ inspire creativity, are customizable, can be used with crayons, markers, and paint. 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. Includes: 5 – 4 Dot Wooden Block Covers 70 – 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.