"I'm a Sparky by trade, and bought this as I'm working on an open rooftop BMS installation at present.
The body warmer itself is of reasonable quality, the materials used are in line with the cost, and the stitching is precise and tidy. The pockets are decent and numerous, with only the restrictive pen pocket and Brest flap pocket letting it down externally (neither will safely accommodate my Fluke Pen#. The Zipped internal and external pockets are very good, although the internal zip seems to be a potential weak point as the teeth are a lot finer than the external pocket zip.
The heat retention is however amazing. I'm only wearing a polo shirt underneath and its almost TOO warm #whilst others on the same site are wearing Hi-Viz bomber jackets to keep warm).
I'm considering buying a second one to keep on the drawer to replace this one when it fails."