Reddit reviews Surgilube 4.25 Ounce Flip Cap Tube Sterile (Pack of 2)

Definitely agree don't start with a cage like this with a catheter. Sounding can feel as good or as painful as you want it to be. My GF and I like the feel good side so comfortable sized sounds mixed with vibrations I can orgasm from sounding even without vibrations it's a lot of fun.

Also when you do sounding you want to be as clean as possible unless you enjoy UTIs haha, you can buy sterile lube Amazon Link this is what we use and what kept being recommended in the sounding articles we read before starting our journey, so far no infections. I clean my sounds with soap, water and rubbing alcohol before and after use and of course she washes her hands thoroughly before play.

If you seriously want to try it start with very small sounds and go slow.