aggressive rollerblades(aggressive inline skates,off road skates) 1)high quality 2)good service 3)reasonable price 4)long li aggressive rollerblades(aggressive inline skates,off road skates)Sizes: 31-34, 35-38, 39-42 Wheel: high rebound PU casting Bearing: Abec-5 or Abec-7 Chassis: alum Colors: black/red, blue/white and pink Adjustable system: back adjustable