Top layer：80% Nylon 20% Spandex; Cushion: Sponge
Machine Wash/ Pack of 2 Pairs
3D Sponge Cushion perfect fit the foot arch, match with your feet arch, and gently relieve pain from flat feet; Massaging Cushion is comfort and support, relieves discomfort.
Seamless splicing technology to the perfect combination of breathable nylon layer with 3D sponge pad; Low-cut, Shoe Shape Unique Design.
Anti odor invisible silicon patch for heel grip none slip hidden sock and insole; Perfect for ballet shoes, pumps, high-heel shoe, sneakers, flat shoe, boat shoes, loafers, ect.