I bought a ps4 recently on my trip to Paraguay and I decided to buy these silicone protectors for the controls.
It is a soft dust cap adapts perfectly to the control of the PS4.
The silicone came kinda dirty, with spots, but nothing to bother.
Below the control with the dust cap:
I liked the dust cap also for protecting a little more options button, I sometimes accidentally grip.
On the back of the Cape was a bit loose.
Bothers you a little bit to play, but don't get too comfortable. I liked the product in General, but I'd rather the silicone was of better quality. I leave below the links to the product: