The max recommended weight for sleeves is 500g; however, I try to find sleeves under that in the sub 300g range. Lighter will obviously move easier and be less prone to strokes being shortened or missed. The heaviest sleeve I use regularly is about 275g- I personally won’t try going heavier than this for now.
Not sure if you’ve come across this thread, but there are some great options here:
https://discuss.eroscripts.com/t/handy-sleeve-alternatives/831