Are the dimensions correct? Because i pressed the here button to get the cover for the Heavy Duty Rolling Garment Rack with Two Shelves, Chrome and it sent me here. I just wanna double check before purchasing?

The dimensions shown are of the actual unit that this cover goes to. When the cover is fully assembled on the unit (which is not included in the purchase on this page, it's ONLY the cover), then those are the dimensions of the cover.

What is the cover made from?

It is made from non-woven fabric.