No matter how fine your suit and your shoes, you will remind everyone that you are not yet a grownup man by wearing them with your old college knapsack, in its nasty, nylon glory. Grownup men have carry bags, made of anything but nylon webbing (try canvas if you are morally opposed to leather). These bags have shoulder straps for when you ride your bike to work.
I’m not just talking baseball caps here – the kind of guy who wears one to a restaurant probably isn’t interested in my tastes anyway – but the hipster in his little straw trilby or porkpie also needs to be aware of the social convention of removing hats indoors.
V-neck over turtleneck
I dislike turtlenecks at the best of times, as they are always unflattering to the imperfect male physique, but when worn in combination with a v-neck sweater they say Grandpa louder than any other item of clothing.
Too much camo
Is it that you want people to know that you have a shotgun in your minivan, or do you just like Duck Dynasty?
People who work in the tech industry seem particularly vulnerable to this: the golf shirt with a company name on it, the favoured vendor’s windbreaker, the nylon briefcase given out by the trade show you attended last year. Chuck them all.
Stubble on older men
Yes, the hunky barista looks even more terrifically masculine with three days’ growth on his chin. Guys under 50 mostly do. But when your beard is partly or largely grey, that stubble can just look a little unwashed. Sadly, when you’re over 50, different rules apply.