Natural bark covered wooden blocks; this massive 144 pieces set of Eco Blocks comes in its own Pirate treasure box with wheels for storage. Made from Sustainably sourced alder, hazel and beech, and finished with linseed oil these natural blocks are heat treated to fuse the bark to the wood and making them beautifully tactile. Each block is cut perfectly level to facilitate stacking and come in incremental lengths to help children visualise fundamental maths skills.This set will contain 'Y' branch sections, and flat disc sections, different length branch sections, and long flat bridge sections. Let imaginations run wild and connect with the natural world with these wooden building blocks. note:; Not suitable to be stored outdoors Inspires creativity and imaginationSupports size recognitionGreat for collaborationContains: 144 blocks in a wheeled storage chestAge Suitability: 3 years +