I typically will wear slim straight in most pants. However, I decided to try these straight pants. They were too large for a 30/30 (my regular size for all brands). It wore like a 32/32.
Had to return. Which was sad as I liked the material. Seemed very durable and flexible (more so than a tradional chino that focuses on strength). Simply WAY too big for what was supposed to be my size.
To help, I've also order other pants in the slim straight version and had zero issue with the sizing.