Once Kids Eco-Bricks Plus NaturalEverything we love in the Once Kids Eco Bricks but twice the size! Eco Bricks Color are biodegradable wooden construction blocks. Durable, beautifully crafted, and even compatible with most major interlocking block brands (so you don't have to start your whole collection all over again). The Eco Bricks nautral set is a brilliant first step into healthier, greener, construction block fun! 20 pack includes: 8 4 Dot Wooden Blocks 12 8 Dot Wooden Blocks