The Herlitz my.book Flex notebook is A4 with 80 sheets (40 squared and 40 lined). It features a flexible, replaceable polypropylene (PP) cover with rounded corners and an elastic closure. The sheets are punched and micro-perforated for easy removal and are made from 80 g/m² wood-free paper (white) certified by FSC Mix. It belongs to a customizable series with interchangeable covers/inserts and elastics. It is suitable for inks including markers and has a durable cover for everyday use.