The Memory Foam Boost 1.5 cm (.6 Inch) Height Increasing Insole by Heelborne Ergonomic Height Increasing Insoles for All Day Wear

Top layer wore down after about a week of regular wear on one of the soles. Shouldn't affect the function of the product but it is noticeable during wear.The sole was definitely designed for feet with a more pronounced arch as standing for over a few hours caused discomfort.