- Size: 38 • Professional orthopedic insole for severe flat feet. • 3/4 rigid reinforcement for greater arch support. • Full length without trimming, suitable for each size. • Relief for pain in flat feet, arches, plantar fasciitis, bunions, metatarsals, heel spurs, Achilles tendonitis, Morton's neuroma, and metatarsalgia. • Anatomical design with high arch elevation and metatarsal pad to improve comfort. • Wrap-around heel contour for greater contact surface and impact cushioning. • Moderate heel tilt to straighten and reduce fatigue. • 6-degree elevation in the big toe to add contact surface. • Breathable, hypoallergenic, waterproof, and 100% recyclable PU material.