The knobbed Ring pessary, available with or without a supporting membrane, has the same indications as the Ring pessary and may also relieve stress urinary incontinence. The ring pessary with knob comes with a supporting membrane, is primarily used for a mild first-degree uterine prolapse or a cystocele. It’s made from 100% medical grade silicon; available in multiple quantities and all sizes/types. Fitting must be done by a physician, so you must know your proper size AND type.HCPCS Reimbursement Code:For Pessary-A4562......Code for the Office Visit-99214......CPT Procedure Code for Fitting & Insertion-57160SizeInch# 01.75# 12# 22.25# 32.5# 42.75# 53# 63.25# 73.5 We do not accept returns if item was opened or because you’ve chosen the wrong size.Please, know your size! Fitting should be done by a physician. *Discounts are available for returning customers and when BUY 10 or more.