Apolla Shocks are the ONLY dance footwear awarded the American Podiatric Medical Association Seal of Acceptance. The patented highly-engineered knit design creates durable footwear that lasts. Easily replaces half-sole dance shoes while providing support and pain relief; Allows for natural grip on the floor, including slippery surfaces; Shows off and accentuates the feet while creating clean lines; No seams to irritate and inflame metatarsals as dancers land through the tops of their toes to the balls of their feet; Soft comfort tab on Achilles tendon provides comfort on the back of the heel; Moisture-wicking and antimicrobial; Washable; DO NOT use with fabric softener or dryer sheets; Made in USA; Apolla Shocks are anatomically correct. The slope of the big toe tells if it is "Left" or "Right."Please Note: Traction will start very sticky before wearing down to the desired grip; once broken in, start refreshing the grip every class to keep the preferred level of "stick."