Suggested size for Slepinir?

I'm looking for a toy that will give me that magical prostate orgasm, and I've decided upon Slepinir, but I'm having a hard time telling which size is a good one. I've practiced a lot with hands and am able to do fisting. However, that's a little too tight, looking for a size that's filling but not too extreme.

 

If you are able to fist then I'd recommend at least a medium. I can fist too but it takes warm up. With a medium it's not pushing my stretch limit and I can really focus on the sensation of my prostate being stroked rather than a huge stretch. Also highly recommend firm, with a suction cup.

I have 4 sleipnirs now, 3 mediums and a large. Medium in firm is my absolute favorite of all my BD toys.

 

I was about to ask you that on another topic xD. Thankss!

 

Yep, Medium Sleipnir does it for me too ... my Large Sleipnir doesn't hit the spot as good unfortunately.