It is always difficult to find classic shaped and comfortable pants. I have selected for you the D3 regular pleated pants from the brand dockers. The shape is great and it does not look too austere. It costs around $40 and the quality is great for that price. It is made of 100% coton. That's very comfy to wear.
Click on the left to order online those classic pants for office at Amazon US
Click on the left to order online those classic pants for office at Amazon UK