1. Standard - the width of the larger seat (where we put the legs) is 60 cm
2. Large - the width of the larger seat is 77 cm
Both sizes differ slightly in shape (the blue base reflects the standard size; the green base - the large size). Both chairs offer the same possibility of sitting in all low positions. The large size gives more freedom of movement, while the standard size is more handy for desks less than 90 cm wide.
