"When it's warm and dry, you can either leave the integrated 2in1 canopy of your trailer completely open (in buggy and jogger mode) or just roll down the insect screen (in bike mode). You can also leave the boot of the trailer open while travelling.
In dry but cold weather, you can close the 2in1 canopy completely, but fold in the lower flap of the canopy's rain cover a little. Optionally, you can also leave the boot open while driving."