Seat rail system for a vehicle and a vehicle comprising a seat rail system

A seat rail system for a vehicle, wherein the seat rail system comprises an upper rail and a stationary lower rail attached to a floor structure of the vehicle, wherein the upper rail is configured for being attached to a vehicle seat, wherein the upper rail is movably arranged in relation to the lower rail in a longitudinal vehicle direction, wherein the upper rail comprises a first side section and a second side section, wherein a cavity is formed between the first side section and the second side section in a lower portion, wherein the lower rail comprises a first lateral side element arranged in connection to and in an overlapping relationship to the first side section and a second lateral side element arranged in connection to and in an overlapping relationship to the second side section, wherein the seat rail system further comprises an elongated load member attached to the lower rail, wherein an upper part of the load member is extending into the cavity,

• wherein one or more lower parts of the load member are connected to the floor structure, and wherein the first lateral side element is configured for blocking lateral movement of the first side section and the second lateral side element is configured for blocking lateral movement of the second side section upon deformation of the upper rail in a vehicle impact event.