SEAT BELT SYSTEM FOR A VEHICLE AND VEHICLE WITH A SEAT BELT SYSTEM

A seat belt system for a vehicle comprising a seat () that includes a seat frame () with a seat frame side part (), a seat belt () associated with the seat () and having a webbing (), and a belt tensioner associated with the seat belt (). The seat frame side part () includes a lateral opening () facing the vehicle interior. The seat () includes a seat cross tube that opens into the vehicle interior via the opening (). The belt tensioner is accommodated in the seat cross tube. The seat belt system further includes a belt guide () and a webbing deflector () for the webbing (), the belt guide () being provided at the opening (). Moreover, a vehicle comprising such a seat belt system is provided.