The idea for a waterproof notebook was born. Key was finding the right materials. The notebooks are made from 80% CaCO3 (calcium carbonate, limestone) and 20% HDPE (High Density Polyethylene). As such you no longer need a special coating to make the product waterproof. This unique formula has led to nearly indestructible, oil and waterproof paper which even works when you are not using a pen. You can namely also write on it using an object containing metal.

Modestone’s story began when important notes written down by establisher Kalle were destroyed by water while he was serving in the Finnish army.

Modestone: waterproof notebooks

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Modestone: waterproof notebooks

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Modestone Handy Pad 1991, 76 x 130 mm

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