The arch support insole can relieve pain,disperse the pressure on the foot, and correct the negative load of the footfor flat feet, heel pain, plantar fasciitis, forefoot pain, and arch depressionRole of line. The use of functional orthopedic insoles isa physical treatment of plantar fasciitis. Orthopedic insoles can be worn indaily walking and sports. Because functional orthopedic insoles are madeaccording to the shape of the soles of the feet and the special physiologicalbending of the arch of the foot, The pressure of the soles of the feet isevenly distributed to the soles of the feet, so it can relax the sole muscles,reduce the tension of the plantar fascia, and promote the dissipation andabsorption of inflammation, thereby reducing the pain and restoring normalfunctions. XS 15cm UK 3-5 EU 36-38 US 4.5-6.5 S 15.5cm UK 5.5-6.5 EU39-40 US 7-8 M 17cm UK 7-8 EU 41-42 US 8.5-9.5 L 17.5cm UK 8.5-9.5 EU43-44 US 9-10 XL 18.5cm UK 10.5-11.5 EU 45-47 US 11-125> If you need to correct the arch collapse insoles, I believe this insole can effectively help you, alleviate the discomfort by flat feet, and let you easily walk every step. 4> The insole can be adapted to various types of shoes, whether it is put in sports shoes, leather shoes, casual shoes, martin boots, work boots. Dot-shaped protrusion design at the bottom of the insole to prevent the insole from sliding inside the shoe. 3> EVA material, while providing arch support, shock absorption. Lightweight without additional burden on shoes. 2> Strong arch support design offer good comforty, helps support the arch of the foot and cushion joint pressure. 1> Orthotic insoles used for relieve foot pain, such as plantar fasciitis, flat feet, heel spur pain, over pronation, fallen arches.