How does a guest check the sternum strap on their harness?

Checking the sternum strap on a harness is crucial for ensuring that it is secure and fitted correctly for safety. The correct approach involves pulling on the excess webbing of the sternum strap to confirm that it holds firm and that there is no slack. This provides reassurance that the strap is properly adjusted to fit snugly across the chest, which is essential for maintaining the safety of the harness system during activities.

Adjusting the strap without pulling may not give a clear indication of whether the harness is secure, as it could still be loose despite being in position. Relying on assistance from a staff member is helpful, but it doesn't empower the guest to independently verify their safety setup. Reading the instructions can provide guidance, yet the effective test of the strap's tightness is to physically pull on it, ensuring it is secure in a practical way. Thus, confirming the security of the sternum strap by pulling on the excess webbing is the most definitive method for checking its fit.