Pace Top Covers attach to Pace arch supports with low-profile hook and loop, allowing you to make your insoles like new whenever you need. Swap Pace Top Covers with other styles of top covers for the perfect fit in all your favorite footwear. These 5mm thick, full length top covers have a higher foam density for a firmer feel. Easy as tying your shoes. Swapping top covers is simple - just hold the arch support in one hand, grab the front of the top cover with the other hand, and peel back. Affix your new top covers to the arch support and you're ready to go. Built for comfort. Open cell foam breathes to keep your feet cool, dry and comfortable. The top surface is designed for low friction, to prevent blisters and calluses. Keep shoes fresher. Replacement top covers are treated with PURE, a silver-based antimicrobial, designed to keep shoes and boots fresh. Don’t let your shoes become an environmental hazard.