Eco-bricks™ 90 Piece Bamboo are natural and biodegradable bamboo construction blocks. 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™ Bamboo 90-Piece set is a brilliant first step into healthier, greener, construction block fun.