I have a rather nice 1-2 person hiking tent from over 20 years ago. It's still made, with very few changes, and is a double wall design that pitches in one go. I thought it was nylon but the current model is polyester; it's certainly synthetic.
It was put away clean and dry some years ago, tightly wrapped in plastic and stored in an unheated loft. I expected to use it again soon but never did. Now I need a light tent again, I want to see if this one is still useful. I can pitch it in the garden, but what should I do to make sure it's OK?