Abstract: A seat portion (2) for a seat (4), which seat (4) is made of a single foam material having one or more apertures (6) defining a seating area (8), the seating area (8) being such that it comprises a first portion (10) for receiving a person's buttocks, a second portion (12) for receiving a rear thigh part of a first leg of the person, and a third portion (14) for receiving a rear thigh part of a second leg of the person, the third portion (14) being spaced apart from the second portion (12), and the seating area (8) being softer than the remainder of the seat (4) portion.

Abstract: A seat comprising a seat portion (2) and a backrest portion (32), the seat portion (2) comprising a seat main portion (4) and a seat insert portion (6), the seat insert portion (6) being such that it fits into a complementarily shaped recess (8) in the seat insert portion (6), the seat insert portion (6) comprising a pair of pads (10, 12) which are positioned so as to be underneath the cheeks of the posterior of a person sitting on the seat portion (2), the seat insert portion (6) comprising a pair of legs (14, 16) which are positioned so as to be underneath the thighs of the person sitting on the seat portion (2), and the seat insert portion (6) being such that it is an inflatable seat insert portion (6) which is able to be inflated and deflated by a user for maximum personal comfort of the user.

Abstract: A seat portion (4) for a seat (2), which seat portion (4) comprises at least a first part (8) which is made of a first plastics foam material of a first density, and a second part (10) which is made of a second plastics foam material of a second and different density.