A vehicle seat comprising a variable thickness bench for the vehicle seat, the variable thickness bench comprising: an upper layer, a middle layer, and a lower layer; at least one frame interface portion comprising a fore-aft section (6-6; 6.1-6.1); at least one cantilevered portion at an end of the variable thickness bench comprising a fore-aft section (5-5; 5.2-5.2); and a seating surface (101.1) that extends along a full length of the vehicle seat in a lateral direction for a plurality of passengers, wherein the at least one frame interface portion (6-6; 6.1-6.1) of the variable thickness bench comprises increased thickness compared to the at least one cantilevered portion (5-5; 5.2-5.2), characterised in that the at least one frame interface portion (6-6; 6.1-6.1) comprises two frame interface portions (6-6; 6.1-6.1) and the variable thickness bench comprises an internal fore-aft section (5.1-5.1) located approximately halfway between the two frame interface portions (6-6; 6.1-6.1), and in that, at a location of at least one of the two frame interface portions (6-6; 6.1-6.1), a thickness of the variable thickness bench comprises a first reduction (107, 109) when moving toward the internal fore-aft section (5.1-5.1) and a second reduction (106, 108) when moving away from the internal fore-aft section (5.1-5.1). an upper layer, a middle layer, and a lower layer; at least one frame interface portion comprising a fore-aft section (6-6; 6.1-6.1); at least one cantilevered portion at an end of the variable thickness bench comprising a fore-aft section (5-5; 5.2-5.2); and a seating surface (101.1) that extends along a full length of the vehicle seat in a lateral direction for a plurality of passengers, wherein the at least one frame interface portion (6-6; 6.1-6.1) of the variable thickness bench comprises increased thickness compared to the at least one cantilevered portion (5-5; 5.2-5.2), characterised in that the at least one frame interface portion (6-6; 6.1-6.1) comprises two frame interface portions (6-6; 6.1-6.1) and the variable thickness bench comprises an internal fore-aft section (5.1-5.1) located approximately halfway between the two frame interface portions (6-6; 6.1-6.1), and in that, at a location of at least one of the two frame interface portions (6-6; 6.1-6.1), a thickness of the variable thickness bench comprises a first reduction (107, 109) when moving toward the internal fore-aft section (5.1-5.1) and a second reduction (106, 108) when moving away from the internal fore-aft section (5.1-5.1). the at least one frame interface portion (6-6; 6.1-6.1) of the variable thickness bench comprises increased thickness compared to the at least one cantilevered portion (5-5; 5.2-5.2), characterised in that the at least one frame interface portion (6-6; 6.1-6.1) comprises two frame interface portions (6-6; 6.1-6.1) and the variable thickness bench comprises an internal fore-aft section (5.1-5.1) located approximately halfway between the two frame interface portions (6-6; 6.1-6.1), and in that, at a location of at least one of the two frame interface portions (6-6; 6.1-6.1), a thickness of the variable thickness bench comprises a first reduction (107, 109) when moving toward the internal fore-aft section (5.1-5.1) and a second reduction (106, 108) when moving away from the internal fore-aft section (5.1-5.1).