Are these chinos good for the office?

Yes. The flat front and straight leg read as smart-casual, and the twill holds a crease well enough for most workplaces. They are less formal than wool trousers.

How do they compare with Under Armour golf pants?

Golf pants stretch more, dry faster and have a gusseted crotch. These chinos are heavier and more cotton-like, so they look better with a shirt but are less suited to hot rounds or workouts.

Owners report creasing after washing. The cotton blend needs ironing or a quick tumble to look sharp, especially at the knee and hip.

What is the leg opening like?

The leg is straight with a moderate hem opening, so it sits over most casual shoes without stacking. It is not a tapered or slim cut.

What should I check before buying a used pair?

Check the waist and inseam measurements against trousers you already own, and look at the seat, knees and hems for thinning or shine. Used pairs may have been altered.