Aetrex Compete Lynco Foot Orthotics L420 Women are engineered to help you stay injury free and maintain fitness and overall health. These light-weight resilient orthotics provide superior cushioning, shock absorption and comfort during high impact activities. Aetrex’s strategically placed, proprietary Lynco arch support helps to balance your feet and biomechanically align your body to help prevent common conditions such as Plantar Fascitis, Arch Pain and Metatarsalgia.