I purchased my first pair of these pants last year, and I now own 8 pairs of these pants. They feel like heavy canvas when you first take them out of the package, but after washing them and wearing them, they are very comfortable. The pockets are all well placed and accessible, and combine cargo and carpenter pockets. The hammer loop is a bit small, but it works great for hanging keys on it with a D-ring. The leather patch at the pocket is great for putting a tape measure on and it keeps the pocket from ripping. The knees are reinforced with an extra piece of material, so they hold up very well. They are made out of a rip-stop fabric, that breathes very well. I haven't yet torn a single pair, and I've really put them through some rough situations, like construction work and demolition. They even hold up to hiking through dense underbrush that would destroy a regular pair of pants or jeans.
I would recommend them if you are looking for a good cargo/carpenter style of pants. They hold up better than Dickies, and are better than the Carhartt pants that I also own. They also come in more colors than either of the other 2 brands.