Extruded vs. Sinter Pressed:
SmartRink ProFast series uses a sinter pressed process and most of the other products on the market use a poorer performing and less durable polymer resin with an extruded process. The result of using a higher end finer polymer resin in combination with a sinter pressed process is a superb glide and excellent speed, and vastly improved durability, which allows the beginner or experienced skater to enjoy their skating experience.