I am aware of the risk of covering a pram/stroller. My redsbaby travel pram has a spf50 cover which is made of mesh and has side panels that allow airflow. I contacted the company as I have been concerned about the safety, they replied by stating that it is made of mesh and allows air to flow. Is this safe?

Red Nose has no information about specific brand name products, but provides the following general information about pram covering.
This includes information about potential risks of pram covering eg reduced air flow, increasing temperature & reduced visability of baby.
https://rednose.org.au/news/the-dangers-of-covering-your-pram

Some recent research information which may be of interest.
https://rednose.org.au/news/parents-unaware-of-the-risks-of-covering-prams-with-dry-fabric