Heavy Duty - love 'em. These are 'better' than the standard Timberland boot everyone else is wearing. Heavy duty, more support in the arch and foot bed, thicker/taller sole and nicely padded tongue.
I sprayed waterproofing spray on these and they didn't discolor.

They are heavy, but that's what I'd expect with a steel toe.  Great with jeans, though they're 'bigger' than the bottoms of your standard jean - you'll want 'boot cut'... depending on the look you want.

Overall good boot and good work boot. Barely feel uneven surfaces underneath.