Generally dissatisfied with it, but not without some advantages. I bought them mainly to keep the controller from sliding off the table when setting it up, which with the stock DS4 controller tended to get around without adding these grips. Pros: - Adds just enough "grip" to keep the controller from sliding in your hands or on a table, but not so much that it's obtrusive, sticky, or uncomfortable to hold. - Cons: - It was quite difficult for me to correctly align the knobs with the controller knobs during installation. - The handles will not fully enclose the handles unless the material is slightly stretched during installation. - Expensive. $10 for a few square inches of adhesive-backed foam feels like overkill. The foam rubber grip doesn't hold the glue as securely as I expected. See comment below. I bought two sets of these. On one of them, the rubber is poorly held by glue. The adhesive sticks firmly to the knobs, but the rubber portion of the knob is starting to peel off. This started shortly after installation. This issue, along with the relatively high cost compared to the quality of the item, are the main reasons why I am giving this product a negative review.