Curtain-type side airbag and curtain-type airbag module

A curtain side airbag for a vehicle occupant restraint system, comprising a main cushion formed by one or more chambers which, when deployed and filled is configured to extend along a longitudinal direction of a vehicle between a vehicle occupant and a side structure of the vehicle and includes an inner fabric layer facing the vehicle occupant as well as an outer fabric layer facing the side structure of the vehicle, wherein on the inner fabric layer, an additional friction-reducing impact layer is arranged which covers at least part of the inner fabric layer and is connected to the inner fabric layer at a plurality of spaced locations, wherein the friction-reducing impact layer is configured to be more flexible than the inner fabric layer such that portions of the friction-reducing impact layer between the spaced locations are movable relative to the inner fabric layer to the extent that the friction-reducing in response to the vehicle occupant impacting the impact layer, at least in the longitudinal direction of the vehicle, without being destroyed.