adjuster function,aluminum frame.PU wheel.inline skate. 1:Boot,soft boot with high density nubuck leather&mesh,mixed foam inside velvet with 3mm black F324?&good quality lining,Footbed:velvet with black EVA.2:Hardware,toecape-high impact PU,Cuff-high impact PP,intergated frame base-high impact pp,chassis-aluminum 2piece chassis.3:Wheel,PU casted transparent wheel 64*24mm 80A ,PP wheel core.4: ...