Carved nut tray using hazelnut and walnut shells, can be used on both sides. Anti slippery, stiif and each piece is unique. One the interesting facts about walnut shells alongside their delicate, noble texture and their neatness and hardness which can be extracted from their shells, is that 67% of the walnut whole fruit is the outer shell. Their uncanny resemblance to the human brain lobes. Walnuts have left and right hemispheres as their wrinkly surface looks very similar to that of the brain.