The pants in the photo are 14 oz. Rivets can also be attached to the watch pocket, but there is a possibility they might fall off in the long run. While the tack pierces through two layers of fabric at the pocket edges, it goes through 4 layers at the watch pocket, and the fabric becomes as stiff as a rock. Because of this, applying capped or nipple rivets to the watch pocket is very risky. Nipple rivets are more durable due to the tack traveling a longer distance, but using them on the watch pocket is still a major risk. On thinner pants, any kind of rivet can be used on the watch pocket.