must items for cold work outside that one should be able to buy online. wool blend socks, under armour coldgear(really does work better than the off brands), insulated/Gore-tex gloves, Most important of all is the boots. I found as long as my feet were warm the rest of my body was fine, I normaly get cold temp boots with 600 to 800gram thinsulate. and Gore-Tex. full leather boots are also warmer. If he gets boots a 1/2 size bigger than normal it makes a perfect fit with thick wool winter socks. also steel toe boots are much colder than normal boots. learn how to layer. base layer like UA cold gear is awesome, then fleece is a great second layer, the third should block wind and water and then trap and reflect heat back towards the person wearing the coat.