Then follow the instructions in this video to get that Fleshlight nice and tight like a bona fide virgin girl.
There are several ways to make the Fleshlight feel tighter. One of the best ways is to wrap rubber bands around the Fleshlight sleeve.
Also putting a wet clothes clothe in the Fleshlight case between the sleeve with make it nice a tight, but can be tricky to accomplish. You may also want to try wrapping some duct tape around the Fleshlight sleeve, or string, etc. Or just squeeze the sleeve between a pillow or something.