- Size: M • Essential for patients with plantar fasciitis, flat feet, hallux valgus, arthritis, heel spurs, Achilles tendonitis, and excessive internal rotation. • Shock-absorbing elastic design with GEL pads in the heel and forefoot to minimize impact and relieve pressure. • Breathable, odorless, and unobstructed velvety material surface that can be easily cut and adjusted for maximum comfort. • Deep U-shaped heel to naturally stabilize and position the heel, keeping the foot bones straight and balanced. • Suitable for high-performance athletic shoes, work shoes, boots, and more. Recommendation: gradually increase usage time starting from 2-3 hours a day. • Measurements: 25 cm long, 8 cm wide, and 3 cm high. Weight: 0.09 kg.