do/can masturbator sleeves cause nerve damage

Forum highlights on Masturbator sleeves:

Stretching a penis sleeve
I have the Ridge Rider sleeve. I've had it for a year, but haven't used it because I could never get it on. So I finally decided to stretch it by...

Ideal Masturbation Sleeve Material?
I checked the forums but couldn't find anything specifically addressing this. What do you feel the most perfect material is for a masturbation sleeve.

The Best sleeve for my man
I'm looking for a great sleeve/masturbator for a decent price. Any advice?

For males: Do texture sleeves make sex better or worse for you?
Do you like them because they're like a thick cock ring, or do you dislike them because the covered section doesn't get stimulation? How do you feel..

Will the Little Secret sleeves fit over the Tango / Salsa?
I plan on purchasing either the Tango or Salsa bullets soon. I know I would love the Little Secret Tease if the vibrations were strong enough, but...