Eco-Bricks‚Ñ¢ Color Plus are naturally dyed and biodegradable wooden construction blocks. Eco-bricks‚Ñ¢ Color Plus are twice the size of our traditional Eco-bricks‚Ñ¢ and are naturally dyed with water-base color, FSC certified sustainable wood, biodegradable, and a renewable resource. The colorful wooden blocks are 100% compatible with both plastic blocks and traditional Eco-bricks‚Ñ¢. Eco-bricks‚Ñ¢ Color Plus 25 piece set are toddler-sized blocks that inspire creativity! Patent Pending. Benefits: Natural and Biodegradable FSC Certified Wood Construction Blocks Non-Toxic Water-Base Color 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 natural and color style blocks for endless design configuration Natural blocks can be personalized with additional medias such as colored pencils, markers, crayons, and paint High-quality design for lasting durability Recommended Age 2 Includes: 15 - 4 Dot Colored Wooden Blocks 10 - 8 Dot Colored Wooden Blocks Packaged in a laser engraved wooden storage box WARNING: CHOKING HAZARD - Small parts. Not intended for children under 2 years. Our mission at Once-Kids is to make toys that kids make their own while helping save our world's oceans.