At work they have some WIGGIES porducts mainly tents and sleeping bags
I once bought a set ther sun walker liners, they are great at wicking the moisture away, the problem is I had pack boots that dont breathe.
I wear pack boots all winter, Im a maintenance guy in Arctic NW Alaska and wear them as oftin as regular boots in summer, I have Bunny Boots as well but only wear them snowmobileing or when Im standing in one place for extended periods Like working on a gas pump out doors, hydroflushing a sewer line, they suck to walk any distance in.
I travel with spare set of pack boots in a old army duffle I trash bag the boots and "2 sets" of liners and insoles as well as 3 sets of socks, dry ziplocked kitchen hand towel or washcloth.
Ive found that trimming a sub-insole of reflective insulation helps (REFLECTEX) or some closed cell foam sheeting like used in packing computer boxes helps these I place in the boot first then place the thick felt insole then the felt boot liner, when operating on frozzen ground I found a insulative barrier between your sole and the bottom your foot isant all that much in the early days of my learning curve I used to wear just boot liners in my old Sorrell Caribou packs I'd pull off my boots feeling bushed and attempt to pull the liners to dry only to discover they'd froze to the boot sole, always keep your feet dry, a wet/cold boot sucks the energy right out of you. swap out socks 3 times a day, if your working a full shift outdoors swap liners at lunch, if you wear bunny boots you can get swamp foot so swap dry scoks as well, use a dry washcloth to swab moisture from the insides before you drive in your dry socked foot in a wet boot otherwise your prewetting your sock before thye do any good.
Ive tried all sorts of socks, in the end my favorites are Fox River brand "style 8259 boot socks" (44%merino wool/44%polypropylene/11%Nylon/1% spandex) my fave for the last six years.