I found that the reviews for the STIFFIE Gunmetal Gradient Grey product are generally very positive. Most reviewers mention that the Gunmetal Gradient Grey sunglasses have a stylish look and provide good coverage from the sun. Many also comment on the comfortable fit of the glasses, and the lightweight feel. Additionally, many customers also mention how pleased they are with the quality and durability of the frames. Overall, the reviews suggest that the STIFFIE Gunmetal Gradient Grey sunglasses are an excellent product.