[i need a regular expression]

Hi people, 

i need to find 16x150gr in Dried Pomegranate Arils16x150gr but the format can vary from

Mt Ceder Balsamic Vinegar 12x250ml to

Mt Ceder Balsamic Vinegar 2x2ltr to

Dried Kalamata Olives 4x1kg. i guess you got the drift

i tried something like : '/[1-9]+x[1-9]+[a-z]+/' but i am so useless at regex.

 

Thank you!