The recommended maximum rider weight is 25 kg; however, each wheel is designed for 30 kg, resulting in a safe total operating load of 120 kg. Adults can take a spin on them, or they serve as a very practical, low, mobile stool. Any smooth, flat surface is suitable. However, keep them away from dirt or sand, as this can get into the wheels and slow them down. Do not leave the toy outside for extended periods in the rain or direct sunlight, as this can damage the surfaces. They can be used on sidewalks, but the wheels may become damaged over time. Don't worry, you can purchase replacements. They are naturally slower on carpeted floors, but your child can still have fun. Regularly wiping the cover with diluted eucalyptus oil helps keep the PU cover supple. Regularly remove hair and other debris from the wheels to ensure smooth operation. The grip bolts should be checked regularly for tightness.