Is it safe to use a Tripp Trapp® Baby Set without a Stokke® Harness?

The Stokke® Harness should be used with the Tripp Trapp® Baby Set. The CPSC safety standard for highchairs requires a three-point restrain system. When the child can climb up and down the chair independently, usually around the age of 3, the Baby Set and harness should be removed from the chair. At that time, you might also adjust the seat and foot plates of the chair to better fit ergonomically the size of the child.