Chair

A chair including:

• a seat with a base having a front edge and a rear edge;
• and
• a back rest extending upwardly from about the rear edge of the base;
• the seat including:
• a front seat portion of resilient material attached to the base,
• a rear seat portion of resilient material attached to the base, and
• a barrier member extending transversely across the base and upwardly from the base between the front and rear seat portions so as to be located closer to said rear edge relative to said front edge, the barrier member having a density greater than the density of the front and rear seat portions,
• wherein the barrier member is a ridge extending longitudinally across a width of the seat and being located rearward of the said front edge towards the said rear edge so as to provide a desired position of a user's buttocks;
• and
• whereby, in use, movement of said user's buttocks from the rear seat portion towards the front seat portion urges the rear seat portion towards the barrier member under the user's weight, deforming the rear seat portion and inhibiting the buttocks from moving towards the front seat portion.