Rollerblade Spark 84 Women's New double wrap asymmetrical shell/upper provide superior fit performance and comfort with a women's specific mold Super high performance Low Balance Magnesium frame is light and strong and dampens road vibration Active Rollerblade 84mm 84A durometer wheels with high performance SG7 bearings Cuff buckle 43 degree power strap and Five Star ladies specific liners offer great comfort and support Everything and active female skater needs. Superior comfort and performance with the NEW Double Wrap upper and memory foam liner. The Magnesium frame is light, incredibly strong and provides great maneuverability while dampening vibration.