Made of sponge, cloth material, this pair of orthotics insoles are and durable for long lasting use, suitable for for poor foot walking posture, long-term walking. Plantar curve design, reduce the pressure on the foot and improve the foot problems. Feature - Color: Black. - Material: Mesh Cloth, Memory Foam. - Size S: About 17cm/6.69 inch(Length); 7cm/2.76 inch(Front Feet Width); 1.5cm/0.59 inch(Foot Arch Height). - Size M: About 18cm/7.09 inch(Length); 7.2cm/2.83 inch(Front Feet Width); 1.5cm/0.59 inch(Foot Arch Height). - Size L: About 19cm/7.48 inch(Length); 7.4cm/2.91 inch(Front Feet Width); 1.5cm/0.59 inch(Foot Arch Height). - Made of material, and durable for long lasting use. - Breathable, comfortable for long term wear. - Suitable for for poor foot walking posture, long-term walking. - Orthotic insoles with specially designed arch support and foot alignment. - Insoles are contoured to improve the foot to function correctly and eliminate pain.