Hey man, I bought a toyota cargo net for a corolla and it fits perfectly... downside is the price on amazon almost doubled from a year ago when I bought it.
https://www.amazon.com/Toyota-Genuine-Accessories-PT347-12020-Cargo/dp/B00540TO2Q
I recently bought a net for my Impreza from this company and its pretty similar quality.
https://www.amazon.com/Trunknets-Inc-Envelope-Toyota-Subaru/dp/B01N7VSB5E
Really you just want an envelope style net that comes with two hooks that replace the clips in the trunk. If you check the pics on the 2nd link you'll see what I mean.