Intentional Design: Designed specifically for ¾ length hard or rigid insoles. Sockless Comfort for Orthotics: Designed as an insole sock and sockless shoe liner, this barefoot shoe insert enhances comfort and cleanliness when wearing arch supports or orthotics. Secure Fit That Stays in Place: High-stretch performance material form-fits directly to orthotics while integrated silicone pads keep inserts properly aligned and stop slipping or bunching. Reduces Blisters, Hot Spots & Noise: Cushioned insole liner helps minimize friction, absorbs impact, and reduces unwanted noise when walking in any compatible shoe. Breathable & Moisture-Controlling: Promotes airflow and moisture control to help reduce odor and irritation, keeping shoes and orthotics fresher throughout the day. Built to Last & Easy to Care For: Reusable, washable sockless insole covers made for daily wear. Fits any shoe that accommodates orthotics, including sandals. Upgrade the way you wear orthotics with the OS1st Orthotic Insole Liners, a sockless insole liner engineered to improve comfort, performance, and longevity of your ¾ length hard or rigid inserts. Unlike traditional socks, this innovative flat sock shoe liner fits directly over your orthotics, creating a clean, comfortable barrier between your foot and insert. The result is enhanced comfort, reduced friction, and improved alignment for better overall support. Crafted from high-stretch performance materials, this sockless shoe liner form-fits orthotics without bulk while silicone grip pads help keep inserts securely in place. Built-in airflow and moisture control help reduce odor and irritation, making these ideal socks for inserts for everyday wear. These Orthotic Insole Liners were designed for ¾ length hard or rigid insoles. Perfect for closed-toe shoes or sandals that accommodate orthotics, the OS1st Orthotic Liners are washable, reusable, and made to last – delivering a true barefoot feel with the support you need.