I purchased this cover to go on my husband's Fire 10 because I was concerned that his inclination to drop electronics would extend to this tablet. The Fire 10 without this cover is slick and thus i thought something that adds some texture might help the user to grip it and protect the device if dropped.
I was pleased with how easily the cover went on the Fire HD 10 and yet how once on it, it seemed to remain securely in place. The left-sided speakers look covered, but upward angled slots protect the speakers while angling sound upwards which frankly, was a good thing! The 3.5mm headphone jack and charging ports are uncovered, yet protected. The power and volume controls are covered, but responsive to touch through the silicon cover.
Built for kids, but good for adults who prefer something more than a slim case to hold on to, this Fintie product is one I recommend. It protects the Fire HD 10 and doesn't impair the tablet's functionality or performance.