Well as for the best recommendation to a friend for specifically vaginal balls then I would most likely say these Smart balls, but this is dependent on her purpose and what task she is trying to accomplish:
If she is looking to strengthen kegels (PC Muscles) then these are a good option but, balls in general are not going to be the best. The best option for PC Strength is a weighted dildo (such as Glass or Steel).
If her purpose is to have an orgasm with these, then again I don't think balls are the best option. In this case it would be best to go with a vibrating egg or bullet (2-3 would be best if she is looking for a massive orgasm) 1 on clit, 1 vaginally, and 1 anally (optional, but could really enhance the pleasure)
If your friend is looking for a method of foreplay and neither to get off, or just starting to strengthen PC muscles then the balls would be the best option. (and the best balls would probably be Smart Balls)
I am pretty sure these balls are actually listed as the wrong material, since they are not 100% silicone. Doing some googling research on these balls, they are actually made of elastomed which is basically elastomer. They will soft like silicone but semi- porous. Even if they do have a silicone “coat” I wouldn’t risk sterilizing them in boiling water, but indeed they can be washed with soap or toy cleaner. (I would be sure to try and try them well to ensure that not a lot of water is left behind in the small pores.)
As for the safeness of SmartBalls, I am unable to judge on that, but just looking at these makes me think the center line would snap, especially if used anally.
-->” It seems like the Smart Balls are safer than the other options on the site” Hmm, compared to what? I am not really sure if you are comparing them to other Smartballs (which indeed these would probably be the safest) or if you are comparing them to other toys (in which there are much safer options out there than these. Ex: 100% silicone Tantus dildos & plugs, anal specific objects, weighted dildos, quality vibrating eggs/balls)
You also might want to find out what your friend’s purpose is and I can further help you (Ex: if she wan’t a toy for vaginal, anal, or both usage, what she intends this toy to do for her --> (Orgasmic, Exercising, For play, Experimentation, etc)
Hopefully this helps, and if you post back with any info, then the next time I check out the forums I will try to help you further. Due to sometimes my forgetful mindset, once you post a reply back, feel free to send me an email and say something like “hey please reply here:”
just so I remember to check back here, and don’t abandon you for a month
Email = firstname.lastname@example.org