https://www.amazon.co.uk/gp/product/B0BGH34K3M
In the cold weather it will provide some insulation.
Not sure when it's hot.
In the local cycle club 2 people have been seriously injured coming off their bikes (back injuries).
I believe that in both cases they were accidents not involving other vehicles.
One was a slip on black ice and landing on their spine - it involved an air ambulance.
