Lenzen is a CHANGE ZERO Sustainable Gift Set containing a GRS-certified recycled PU refillable A5 ruled hardcover notebook, matching recycled PU ball pen and recycled PU keychain with 32GB USB flash drive. Elegantly design, and sustainable by nature. Lenzen is a CHANGE ZERO gift set, which means that it is developed with a net zero carbon footprint - By using GRS-certified recycled PU materials, we reduce 37% carbon emissions by recycled material use (calculated by ecoact(R)). Further, we offset the balance 1.23 kgCO2eq per unit by financing renewal energy projects through Climate Partner, making it a carbon-zero product. Packed in an elegant gift box.