Does the constriction sleeve work on the vac-extender "holders", seems too sm

I can fit the constriction sleeve on no problems. The priblem I have is when I try using it in conjunction with the vac-extender. I can fit it in the vac-hanger since the “holder” is much bigger. Do people use the vac-extender with a c-sleeve, or is it made to be used without? My head barely fits in the larger holder without a sleeve!!

Also on the order page it shows large and small constriction sleeves. I only got one size, but are there different sizes?