Time traveller

A fat time traveller travels back to ancient Rome.

Upon arriving he realises straight away he hasn’t dressed historically accurately for the trip and looks out of place. He finds a small toga shop and begins browsing for something to wear but nothing fits him due to his size!

He finds the shop clerk and asks "Do you have XL togas?"

The clerk replies "Of course,

Spoiler:

but why do you need so many?"