The Spenco® Knee Support insole provides semi-rigid stability that increases foot balance, helping to guide the foot through proper movement. Increased motion control allows the muscles and tendons in the feet and ankles to function more efficiently and reduces pain and discomfort in feet, ankles and knees. The semi-rigid stability cradle was crafted to provide medium arch support, deep heel cupping and comfort through the stride. Semi-rigid stability cradle provides medium arch support, deep heel cupping and comfort through the stride.Provides improved motion control to reduce over-pronation and supination – the leading cause of many common injuries such as runner’s knee.Designed for those seeking semi-rigid support to improve knee discomfort.Forefoot perforations increase air flow for enhanced breathability.Trim-To-Fit sizing fits most shoe types and foot sizes.85% ethylene vinyl acetate, 10% nylon, 5% mesh fabric.Machine wash.Imported.SKU 9981784