- Size: 38/39 • Relief and prevention of foot pain: orthopedic inserts provide rigid arch support. • Helps relieve stress and pain from flat feet, fallen arches, bunions, back pain, and diabetes. • Hard and high arch support: aligns the body by supporting the subtalar joint. • Comfortable material for standing all day: the Poron heel pad is excellent for shock absorption. • Fit and design for daily use: fits most shoes, such as running shoes and work boots. • Warning: you may feel pressure on your foot during the first few days of use.