Made from high-end French terry fabric, colleagues will assume you’re wearing woolen dress pants as per usual – unless the stance at your desk gives it away. It’s difficult to wear something as comfortable as traccy-Bs without spreading your legs as far apart as possible and slouching your way down your seat as if you were a gel-like amoebic form. Don’t let them fool you.

Priced at US$90, the garment has proved so popular that the company behind it, Betabrand, sold out its first two runs. Fortunately, you can submit a pre-order for the next delivery in March. Sizes range from 28W-32L to 40W-32L (these are real fake proper trousers after all) so you should be able to find something that fits unless you’re so big you really do belong on a sofa.

Smart sweatpants in every sense.