Helps reduce muscle fatigue; feet & leg cramps. perfect for flats, boots or any casual shoes. Ultra-slim 3/4 length design wont crowd the toes. Energizing gel absorbs shock in heel; cushions sensitive ball of foot. Ultra soft purple gel wave design for better comfort & shock absorbtion. If the insoles stop sticking, simply handwash with a mild soap and water then air dry, this should help reenergise them. To use - Dry wipe the inside of shoe clean. Remove clear plastic adhesive backing on the insole and place in shoe - tacky side down. Align insole with arch position, press down to adhere.