Tapered edge fits comfortably in your shoes</br>Air injected spenco material exclusive cushioning layer absorbs shock and impact to provide maximum comfort</br>4-way stretch fabric with ultra-fresh silpure antimicrobial helps prevent blisters while controlling odor</br></br>Product Description</br></br>Air injected spenco material exclusive cushioning layer absorbs shock and impact to provide maximum comfort. 4-way stretch fabric with ultra-fresh silpure helps prevent blisters while controlling odor. tapered edge fits comfortably in your shoes. consumers with sore heels. consumers seeking additional heel cushioning.</br><br/>http://www.amazon.com/gp/product/B0013UCF5E