Here’s the deal, all the corporate security types are big, but they aren’t all stupid. You have to strike a balance when you’re dressing for surveillance. Looking too nondescript is almost as bad as standing out.
Part of their job is knowing who’s supposed to actually be there. They can spot someone who looks like they’re trying to blend in. The number of guys that have been bounced before they could even get the code for a front door keypad, let alone anything useful, is countless. Wear something kind of bright but anonymous. You’ll look another kid from the high street trying to show off your outfit, but odds are, no one there will remember anything specific about it later.
If a size is not listed, it is sold out.