If you ride a heavily loaded bike, then a double-leg kickstand is almost essential. A key feature of these kickstands is that the two legs spread as the kickstand is deployed and close as it's raised. This makes for a very stable stand that doesn't interfere with pedaling. The leg extensions, which look like rubber boots, can be adjusted by twisting and pulling or pushing, so the legs are the perfect length without cutting. You can lock them with an allen wrench to whatever length you set. There are also adjustments to perfectly align the stand when it's raised.
A top plate and a long mounting bolt are included, so they fit most bikes with, or without, kickstand plates.
The Porteur model kickstand is designed for delivery bikes, city bikes, touring bikes, with internal or single speed gearing.
For bikes with derailleurs, use the Copenhagen model.
A great addition to your bike if you have baby seats too.