Ostomy Belt Sizing Guide
Getting the right size makes or breaks how an ostomy belt feels. Too loose and it won't hold the pouch snug; too tight and it presses on the stoma or digs in after a few hours. This guide walks through how to measure yourself and how to read the size chart for the HIRO Performance Horizontal and HIRO Performance Vertical ostomy support belts.
How to Measure Yourself
Measure your waist just above and below stoma level, then take the average of the two numbers. This often differs from your regular pants size, especially in the weeks after surgery when swelling is still settling. Use a soft measuring tape, and measure over a t shirt or against bare skin rather than over bulky clothing. The UOAA New Ostomy Patient Guide and the American College of Surgeons Ostomy Home Skills program explain how your abdomen changes as you heal.
A note from Richard: bodies change after surgery, from swelling, weight shifts, or just healing over time. If you're between two sizes, or if your measurement has changed recently, it's worth re measuring before you order rather than going with what you remember from last time. If you're unsure where to measure around your stoma, your ostomy nurse can help, and the WOCN Society can help you find a WOC nurse. If your nurse helped you get fitted, you can thank them during Nurse Appreciation Month.
Are you a nurse? Click here for our quick nurse resource guide with sizing help, a printable ostomy belt fitting and order guide, patient welcome coupons, and free demo belts.
HIRO Performance Adjustable Sizing
The Performance Horizontal and Performance Vertical belts use an adjustable closure with roughly 6 inches of range per size, so you don't need to land on an exact number. If your measurement falls anywhere in a size's range, that size will fit.
| Size | Waist Range |
|---|---|
| XXS | 20 to 25 in |
| XS | 24 to 29 in |
| S | 28 to 33 in |
| M | 32 to 37 in |
| L | 36 to 41 in |
| XL | 40 to 45 in |
| XXL | 44 to 49 in |
| XXXL | 48 to 53 in |
If your measurement lands right on the border between two sizes, size up. The adjustable closure can always cinch in further, but it can't stretch past its range. Pro tip: some people keep two sizes, a snugger one for sports or as an ostomy belt for swimming, and a looser one for relaxing or sleeping.
Shop Performance Horizontal | Shop Performance Vertical | Shop All HIRO Ostomy Belts
How Snug Should It Feel?
Snug, not tight. Your HIRO belt works as an ostomy bag holder, not a girdle, so you should never feel pressure directly on the stoma. Whether you wear it as a colostomy bag belt or an ileostomy support belt, it should hold the pouch flat without restricting breathing or movement. If you're shopping for a parastomal hernia belt, talk with your surgeon first; the UOAA explains the warning signs in Do I Have a Parastomal Hernia?, and I cover fit and wear time in How an Ostomy Hernia Belt May Support Parastomal Hernia Care.
Which Style Fits Your Life?
Size is the same for both styles; the difference is the pouch opening. Compare them in our horizontal vs vertical ostomy belt guide, or read How to Choose an Ostomy Belt for my full checklist and why a stoma support belt makes daily life easier. Customers share how their fit worked out on our reviews page.
Common Questions About Ostomy Belt Sizing
How do I measure for an ostomy belt?
Measure your waist just above and just below your stoma with a soft tape, then take the average of the two numbers.
Is my ostomy belt size the same as my pants size?
Often not, especially in the weeks after surgery when swelling is still settling. Always go by your measurement at stoma level.
What if I'm between two sizes?
Size up. The HIRO Performance belts adjust about 6 inches per size and can always cinch in further, but they can't stretch past their range. If your body has changed recently, re measure before you order.
Still Not Sure?
If your measurement falls between two sizes, reach out before ordering. Sizing questions are easier to sort out beforehand than after a belt arrives, and you'll talk with a real person who wears one every day. You can also check our returns policy and shipping policy, or see all ostomy belt FAQs.