The Wide Series is ideal for persons that range in height from approximately 5′3 ″ – 5′ 9″ and weigh from 170 to 220 lbs. Ideal body type is a medium to wide build, i.e. – medium to wide shoulders and medium to wide waist. The main factor to consider is that the seat pan is quite long. If you are too short for this chair the seat pan may impinge on the back of your knee.