Topo Designs Duck Canvas Double Knee Workwear Pants. Army fatigue square cut front pockets that continue into the double knee style with squared off rear pockets as well. Silver buttons with embossed logo. 4-button fly no zipper. Made in Colorado USA. Topo no longer makes these heavy duty carhartt style pants. These are from the earlier years of the brand and are one of the best pants I’ve owned. Size 30” but measure closer to 29”.