1)Best quality,price,service 2)Recycled,eco-friendly 3)Antibacterial,breathable 4)Hygroscopic,perspiration 5)Pass ... reasonable price but that its special advantages.2.Eco-friendly Recycled Insole Foam: Physical CharacteristicsDensity(kg/m3)170— 190Hardness(asker c ... . All our insole foam have passed SGS test: Eco-friendly Recycled Insole Foam