When checking the rear by turning your head, there were disadvantages such as not being able to focus on the front for an average of 2-3 seconds and the aero position duration becoming shorter. However, this product has a mirror attached to the handlebar end cap, giving it a rear-view mirror feel that you can see just by glancing. This way, you can check the rear with just a glance and ensure safety, so it seems like a great solution.
If you're curious, search for rizoma_r21 on Instagram
The website is cycle.rizoma.com
