Non fleece kids dressing gown/onesie/oodie

[Mama3737]

Sorry I wasn't sure where to post this!

My 11yo son can't wear fleece material without sneezing and getting sore eyes, I'm looking for a warm dressing gown or similar for the winter for him, but everything I see is fleece! Can anyone recommend any warm, thick cotton nightwear for on top of his normal pjs?

Thank you!

Towelling dressing gown.
https://www.johnlewis.com/john-lewis-kids-towelling-dressing-gown/navy/p3617104?size=3%20years&s_ppc=2dx92700078364681999_brand_mixed_BAU&tmad=c&tmcampid=2&gclid=EAIaIQobChMI19Pd5e2jggMVOIBQBh2hWgApEAQYDiABEgLIkPD_BwE&gclsrc=aw.ds

Cotton onesie
https://www.johnlewis.com/john-lewis-kids-christmas-fair-isle-print-onesie-multi/p110646721?size=8%20years&s_ppc=2dx92700078364681999_brand_mixed_BAU&tmad=c&tmcampid=2&gad_source=1&gclid=EAIaIQobChMIiJCem-6jggMVWvDtCh3V0QBBEAQYAyABEgK6dvD_BwE&gclsrc=aw.ds

This one is nice and on sale. They also have similar in M&S and White Company

https://www.johnlewis.com/john-lewis-kids-reversible-outer-space-jersey-robe-grey-black/p110505114?size=3-4%20years&sppc=2dx927000783646819999brandmixeddBAU&tmad=c&tmcampid=2&gadsource=1&gclid=CjwKCAjw7oeqBhBwEiwALyHLM3hLHPPfgz0Musn0wwqrCxYO3Wxlf03JUx-pAOCeTtfu23Hgis1SGxoC3DIQAvDBwE&gclsrc=aw.ds