If you dread putting on your shoes because of painful blisters, this is the solution you've been looking for. Get immediate relief from the painful friction of rubbing, calluses, and blisters. ENGO patches immediately reduce friction and protect your skin. How ENGO patches work unlike traditional blister bandages, ENGO patches are applied to footwear, innersoles or orthotics - not to the skin. They use a patented technology to provide immediate relief from the friction that causes blisters. Ideal for athletes, high heel wearers, those on their feet all day, or breaking in new shoes. Apply them to heels, sports shoes, cleats, dance shoes, or work boots. Don't let blisters slow you down; try ENGO patches for instant relief. Note: ENGO may not adhere to shoes with internal waterproofing.