SUper-LOw-FRIction (SULOFRI) high-tech stick-on dance soles are a revolutionary product that allows dancers to pivot and slide with ease on even the stickiest dance floors. Such floors include concrete or asphalt surfaces at outdoor dance events, extremely sticky dance floors in bars or nightclubs, and most types of carpet.All SULOFRI components are backed by 3M’s 300LSE industrial-strength adhesive. Thanks to that adhesive backing, SULOFRI components can be easily attached to existing suede or leather-soled dance shoes, flat-soled street shoes, most high-heeled shoes, and flat-soled exercise shoes. SULOFRI is not suitable for shoes with agressive profiles, such as running shoes..As pictured and offered in this listing, the main SULOFRI component is a 3-inch outer disk, and, within it, a perforated 2-inch inner disk made of the same material as the outer disk. This configuration is for dancing on concrete and asphalt. The inner disk can be replaced by a separately available soft inner disk (which can be found by entering SULOFRI-SD in the Amazon search box). With the soft inner disk, SULOFRI is suitable for dancing on very sticky indoor floors and on carpet.What’s included: There are eight items in this kit for outfitting one pair of shoes: 2x SULOFRI outer disks with perforated inner disks in place. 2x SULOFRI toe patches. 2x SULOFRI side patches. 1x small tube of Super Glue Gel to reinforce the bond between SULOFRI and the shoe soles when using SULOFRI on non-flat soles or soles with a curvature. Also useful for minor repairs, if needed. 1x two-page, full color instructions and usage tips.WARNING: This product is intended to substantially reduce friction of dance shoes on rough outdoor floors like concrete and asphalt. Walking or dancing on smooth and clean tile, wood, or other hard floors while wearing this product dramatically increases the risk of slipping and falling. Walking on wet or slippery floors when wearing this product can be almost as hazardous as walking on ice with regular shoes.