Does anyone have any experience with penis sleeves?

[Anonymous]

So I'm not the biggest guy down there. Lost an inch to putting on lbs as well. My bf and I are very open in the bedroom and know I don't have the longest tool in the shed. With him having a big bootie it doesn't help either when he wants to bottom. We've discussed the idea of getting a sleeve so I can be longer for him and get more than just knocking on the door. 

So here's where the issue is. Most of the sleeves seem to come as a sort of cock ring to stay on. Here's an example.

https://www.goodvibes.com/s/sex-toys/p/G...rjam.21181

I'm wondering if anyone has ever used one of these and if so how stretchy is the ball hole for these things. I have big balls and struggle with cock rings. If I struggle with those, how am I supposed to use this? I wish oddball sex toys like this would actually have a video of a guy putting the toy on. It would be so much more informative.