yes
We offer "Travel eSIM", i.e. virtual SIM cards. This avoids the need to buy a plastic SIM card for short periods.
As such, a study conducted by Fraunhofer IZM for Giesecke+Devrient (G+D) indicates that for a typical 3-year usage, an eSIM generates ~123 g CO₂-equivalent, compared to ~229 g CO₂ for a physical SIM card - a reduction of around 46%.
Official partner