Ring Pessary Size 3 (2.50 inches / 64 mm): Who It Fits and How to Choose

Ring pessary size 3 measures 2.50 inches (64 mm) in outer diameter. It is one of the smaller adult sizes and is most often fitted in younger patients, women with 0 to 1 vaginal births, or anyone with a narrower vaginal canal and mild-to-moderate pelvic organ prolapse. This guide walks through who size 3 fits, when to size up or down, and how to confirm your fit at home.

Size 3 at a glance

Every SciMed ring pessary is molded from medical-grade silicone and finished in California. Size 3 is identical in design to sizes 0 through 13 — only the outer diameter changes. The ring is flexible enough to fold in half for insertion and springs back to a circle once seated above the pelvic floor.

  • Outer diameter: 2.50 inches / 64 mm
  • Material: 100% medical-grade silicone (FDA Class II)
  • Variants available: with support (membrane) or without support (open ring)
  • SciMed direct price: $49.99 (with support) or $44.99 (without support)
  • HCPCS code: A4561 (HSA/FSA eligible)

Who size 3 typically fits

Size 3 is not the most common starting size — that honor belongs to size 4. But size 3 is the right choice for a specific patient profile.

You are a candidate for size 3 if most of the following apply:

  • You have had 0 or 1 vaginal births
  • You are under 50 years old, or you are post-menopausal with a smaller frame
  • Your prolapse is graded mild to moderate (POP-Q Stage 1 to early Stage 2)
  • A size 4 felt too large or fell out during a clinic fitting
  • Your provider noted a narrower introitus or shorter vaginal length

If you have not been fitted yet and you fit this profile, ordering the 3-Size Home Fitting Pack (sizes 3, 4, and 5) is the most reliable way to confirm without multiple clinic visits.

Size 2 vs Size 3 vs Size 4: how they compare

Size Diameter (inches) Diameter (mm) Typical patient Frequency of use
Size 2 2.25" 57 mm Petite frame, nulliparous, post-surgical narrowing Less common (~10%)
Size 3 2.50" 64 mm 0-1 births, smaller pelvis, mild prolapse Common (~20%)
Size 4 2.75" 70 mm Average adult, 1-2 births, moderate prolapse Most common (~40%)

When to size up to 4

A pessary should sit comfortably above the pelvic floor and stay put during normal activity. Size up to 4 if any of these happen:

  • The size 3 falls out when you bear down, cough, or use the toilet
  • You can feel it shifting low during walking or standing
  • Your prolapse symptoms (bulge, pressure) are not relieved
  • You can rotate the ring 360 degrees with very little resistance

For most patients, the next step is to try a Ring Pessary With Support, size 4. If you ordered the fitting pack, simply swap to the next size up.

Need help deciding right now?

Message Bharat and the SciMed team on WhatsApp at +1-669-265-9353. Most sizing questions get answered the same day.

When to size down to 2

Size down to 2 if you experience any of these with size 3:

  • Pain or pressure on the vaginal walls that does not ease after 24 hours
  • Difficulty urinating or moving your bowels
  • Visible indentations on the vaginal tissue at follow-up
  • The ring will not fold or insert without significant force

Size 2 is uncommon but appropriate for petite anatomy or patients with prior pelvic surgery that narrowed the canal. Talk to your provider before going below size 2 in either direction.

With support or without support: which size 3 do you need?

Both variants share the same 2.50" outer diameter. The difference is the silicone membrane.

Ring with support (membrane across the center)

The Ring With Support includes a perforated silicone diaphragm. Choose this version if you have:

  • Cystocele (front wall / bladder prolapse)
  • Mild uterine prolapse alongside the cystocele
  • Stress urinary incontinence triggered by prolapse

Ring without support (open ring)

The Ring Without Support is an open ring. Choose this version if you have:

  • Isolated uterine prolapse without bladder involvement
  • Mild rectocele (back wall prolapse)
  • You prefer easier self-removal because the open ring folds more compactly

If you are not sure, the with-support version is the safer first choice because it covers more prolapse patterns. Read the full uterine prolapse guide and the rectocele guide for compartment-specific recommendations.

How to confirm your size 3 fit at home

Follow these checks for 48 hours after first insertion:

  1. Stand and walk for 10 minutes. The ring should be invisible to you — no pressure, no bulge sensation.
  2. Cough hard three times. The ring should stay in place. If it slides down to the introitus, size up.
  3. Use the toilet. Both urination and a bowel movement should feel normal. If they do not, the ring may be too large.
  4. Sleep with it in. No discomfort, no spotting in the morning.
  5. Remove it the next evening. The vaginal tissue should look pink and healthy, with no deep ring impressions.

If all five checks pass, size 3 is your fit. Order a single replacement directly so you always have a spare.

Where to buy ring pessary size 3

SciMed Store manufactures pessaries in San Jose, California and sells direct to patients and clinics. That keeps the price at $44.99 to $49.99 instead of the $80 to $150 typical of distributor channels.

All pessaries are HSA/FSA eligible under HCPCS code A4561 and ship from California within one business day.

Frequently asked questions

Is ring pessary size 3 the same diameter from every manufacturer?

Yes. Pessary sizing is standardized — size 3 is always 2.50 inches / 64 mm in outer diameter, whether it is made by SciMed, CooperSurgical, or Bioteque. Material thickness and flexibility can differ between brands.

Do I need a prescription to buy size 3 in the United States?

No. Ring pessaries are FDA Class II medical devices and are available over the counter in the US. A clinic fitting is recommended but not legally required.

How long can I wear a size 3 ring pessary?

Most patients wear the ring continuously and remove it once a week for cleaning. Your provider may give you a different schedule based on tissue health and whether you are post-menopausal.

Will I feel size 3 when it is in correctly?

No. A correctly fitted pessary is invisible to the wearer. If you feel it, it is either too large, sitting too low, or rotated incorrectly.

Can I have sex with a size 3 ring pessary in?

The Ring Without Support is generally compatible with intercourse. The Ring With Support is not — the membrane gets in the way. Either way, removal before intercourse is easy and is what most patients choose.

What if size 3 works but I want a second opinion?

Bring the pessary to your next OB-GYN appointment. Any women's-health provider can verify placement during a standard pelvic exam.

Order or get help

Ready to order? Pick your variant:

Not sure yet? Message Bharat directly on WhatsApp: +1-669-265-9353 or email sales@scimedstore.com. Free sizing guide available on request. Made in California. Ships in one business day.

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