I received the 501 CFS boots just yesterday and have worn them for two days. The fit is good but I’ve learned to give new boots a few weeks to be sure. The leather is amazing and I imagine these boots will develop a nice patina in a short time. The quality is very good, especially considering the price; a bit better than the 901. I’m a solid Brannock 10D and ordered 42. These grip the tops of my feet well, give a secure pop when my heels slip past the counter but have the slightest heel slip. For comparison, my 901s are a 43 and much too big because they are wider in the toe box. These are a much slimmer boot. Very nice boots here!

Good quality and nice leather. Still breaking them in, but so far so good. It's nice to get this much quality for the cost and is a great value.

The only wish I would have is for a narrower shaft, because even using the very tightest adjustment hole on the calf strap still leaves a lot of space around my leg. But I do have thin legs. I like the boots, would recommend!

The 501 Engineer Boots are identical to the description and photos. I was surprised as to how accurately they matched the online link. The boots are true to size. I'm a true 9.5 and ordered a 42. They fit with a little room. I have not worn the boots yet and plan to wear them soon. Didn't want to mess them up in snow. Jimmy is awesome and recommended the size based on k formation Inshared with him. I plan on ordering another style boot later on.

Excellent clicking, stitching, finishing, and fit. The CFS leather is beautiful, probably the most pull up of any leather I’ve seen. I’d rank these easily among some of the Japanese brands that cost 2x as much. Thanks COR, I’m super pleased!