Inline Rollers of the company SMJ Sport in blue color. Inline Rollers have a series of aligned wheels located towards the center of the frame, below the boot. They achieve higher speeds compared to Quad Rollers because they have less ground contact area, making them ideal for fast skating. High speed requires more balance and control, which is why experienced inline skaters develop techniques for speed adjustment and stopping.

These specific rollers are adjustable. The ability to adjust the size makes it easy to quickly adapt the roller to the user's foot. This allows you to find exactly the number that fits your own foot, and at the same time makes them ideal for use by different individuals.