Thin 3/16' Thickness Bio-Tech Gel. Low Profile for specialty shoes. (dress shoes, dance shoes, shoes with less room). The Only Prefabricated Orthotic Insole That Shapes Dynamically To the Specific Contours of Ones Foot. Bio mechanically Engineered , Self-Forming High Density Memory Foam, High Impact Absorbing Viscoelastic Gel, Precise Anatomical Foot Alignment, Maximized Arch Support, Supreme Cushioning and Protection, Foot, Knee, Low-back Pain Relief, Ultimate Comfort, Made in USA, 100% Eco-Friendly Packaging.