Keep him warm with a flannel workshirt for $60. It's traditional pockets and brushed flannel cotton takes it from basement workroom to a night out.
Slim brushed twill shirt in Danbury red plaid / by J.Crew
Classic flannel. If you want to go lumberjack, this is a good way to go.
Men's Long Sleeve Tailored Fit Flannel Shirt from Lands' End http://www.99wtf.net/men/mens-fasion/latest-mens-casual-trouser-trend-2016/
Slim brushed twill shirt in heathered plaid - slim shop - Men's Men_Special_Shops - J.Crew
Men's plaid flannel from Lands' End. Does it get better? $37
AEO Rugged Flannel Workwear Shirt .. Like with a plain crew neck under?
Superdry Lumberjack Twill Shirt