Carhartt Men's Slim Fit Straight Leg Rugged Flex Jean

How does the "Rugged Flex" stretch feel in a slim-fit cut?

It is essential for this fit. Because the cut is closer to the body, the 1% spandex blend is what prevents the fabric from feeling tight or restrictive when you are crouching, climbing, or working in confined spaces.

Do they fit over work boots, or are they too narrow at the bottom?

They feature a straight leg opening that is designed to fit comfortably over standard work boots. While they offer a slimmer, more modern look, they aren't "skinny" jeans—they are intentionally built to maintain compatibility with your jobsite footwear.

Do the belt loops hold up to tool belts?

Yes, they feature strong, sewn-on-seam belt loops that are specifically reinforced to withstand the weight and stress of a tool belt, preventing the common issue of loops tearing away during heavy-duty use.