Folding Treadmill with 10km/h Speed and Rolling Wheels for Home UseThe R2 takes the space saving design of the R1 and makes some pretty major upgrades. Now capable of 10km h, the more stable and sturdier build reduces noise and helps reduce the impact of running on your joints. The folding design easily slips under beds and sofas, meaning there's no need to plan your living space around the treadmill. The rolling wheels also help you move the unit wherever you want.