A "mesh top" refers to a type of clothing, usually a shirt or blouse, that is made with a fabric that has a lot of small holes in it, creating a breathable and see-through effect. Full definition
I have it in royal blue; only problem with mesh tops is they get caught on my rings. (thefashionguitar.com)
We love that it's available in 5 different heights and that you can purchase an add - on sunscreen or wire mesh top for shade or security when outside. (caninejournal.com)
A full mesh top provides excellent ventilation throughout the tent and also lets parents peek in to see what's happening inside. (geekwrapped.com)