Fits Eckse “F” flair heels. The Flare cut advantage is that the top half of the inside of the protector is cut at an angle so that the heel protector “Hugs” the top of the heel. What does this mean? It means that the heel protector cannot “wobble” at the top of the protector. They are made of flexible material thus enabling an easy use. Just before each usage the protector should be kneaded in hand for a while.” Our heel protectors are extremely strong, long lasting and most suitable for dance comps.