Features: 1.Foot Soothe: Our insoles with 68 magnets strategically-placed magnets and raised nodes stimulate reflexology points foot massage shoe inserts for ball of foot pain. 2.Breathable: Soft and washable. Acupressure insoles with 250 air holes provide ventilation better and keep your feet cool. 3.Relax Muscle: It effectively reduces pain and makes walking more comfortable to encourage you to stand and walk properly. 4.Health Improvement: These super magnets are strategically positioned to stimulate reflexology points and are bio-north (-) facing the body. Magnet therapy is an effective alternative medicine used for centuries to promote pain relief reduce inflammation improve circulation and balance positive energy 5.Warm Tip: Please try slowly Use it for 5-15 minutes at the beginning gradually increase the use time until you feel comfortable the effect of acupressure will comb your blood this is the real role of the massage insoles. Specifications: Sole Material: PVC Size: S: 35-40/ 25 cm L: 41-45 /27.5cm Notice: 1.Actual color may be slightly different from the image due to light effect. 2.Please allow 1-3cm deviation due to manual measurement. includes: 1 Pair x Heated Insole 1 x Manual " Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.