Quick answer

If you're new to kegel balls, start with the SMARTBALL UNO. If you want more intense stimulation and a stronger workout, the SMARTBALLS DUO is the better pick.

What sets them apart

Both SMARTBALL UNO and SMARTBALLS DUO are pelvic floor trainers from Fun Factory, designed to strengthen muscles and potentially help with incontinence and postpartum recovery. The key difference is the number of balls: UNO has one, DUO has two.

A single ball is lighter and easier to control, making it ideal for beginners. Two balls add more weight and internal movement, which can intensify the workout as your muscles get stronger.

Trade-off: intensity vs. comfort

The DUO's two balls create more internal motion, which can feel more stimulating but also more demanding. The UNO is gentler, letting you focus on basic contractions without extra distraction.

If you're returning to pelvic floor training after childbirth, starting with the UNO can help you rebuild strength gradually. The DUO is better when you're ready for a challenge.

How to choose

  • New to kegel training: Choose SMARTBALL UNO. Its single ball is lighter and easier to control, letting you learn proper technique without added intensity.
  • Ready for more intensity: Choose SMARTBALLS DUO. The two balls create more internal movement, giving your pelvic floor a stronger workout as you progress. If you can comfortably hold the UNO for 10 minutes, consider moving up to the DUO.
  • Postpartum or incontinence concerns: Both can help with postpartum recovery and incontinence prevention, but start with the UNO to rebuild strength gently before trying the DUO. Consult your healthcare provider before starting any pelvic floor program after birth.

Product facts

  • SMARTBALLS DUO: SMARTBALLS DUO contains two balls with an inner weight that moves when you do, stimulating the pelvic floor muscles. The dual-ball design provides a more intense workout, making it a good next step after you've built some strength.

    SMARTBALLS DUO

    SMARTBALLS DUO

  • SMARTBALL UNO: SMARTBALL UNO is a single-ball trainer, ideal for beginners, with a tapered tip for easy insertion. The single ball is lighter and simpler, helping new users get comfortable with kegel training before progressing.

    SMARTBALL UNO

    SMARTBALL UNO

Which one fits you?

Best for

  • Beginners who want a gentle introduction to kegel balls
  • Anyone rebuilding pelvic floor strength after childbirth

Not for

  • Those who already have strong pelvic floor muscles and want a more intense workout