What is the handbrake used for? The handbrake provides a quick way to stop or slow down the stroller while jogging or going downhill. Related articles My handbrake feels less responsive and requires more force to stop, is there anything to help? When do I need to use the wrist strap? I'm hearing a rubbing or scratching sound coming from the wheel. How do I fix? Why can’t I get the Tension Indicator fully green on the Knox SmartSecure System? Is the Mesa Max carry handle position required in the 4th position when installed with carrier-only and with the base?