The laterals shouldn't be too tight, and shouldn't dig into the armpits. But we like to see the child in his chair at least once a year, especially if he's still growing. And anytime they think there's a problem they can't fix, we want them to come in. In addition to monitoring the fit of the chair, Seiberlich stresses the importance of regular maintenance. The chair should be washed regularly, using a spray cleaner.
Most cushions are washable, or have washable covers.
Simple problems can easily be fixed at home. More involved ones can be taken care of by the vendor, who will almost always do maintenance for free. Finally, Seiberlich returns to the transportation issue to stress an important safety rule. Chairs are generally not crash-tested, and the pelvic strap that keeps you in the seat is not as strong as a seat belt. We recommend that a child be on the car seat, strapped in using the car's seat and shoulder belts.