How to Size Women's Incontinence Underwear

To choose a women's incontinence underwear size, measure your waist and hips, compare both numbers with the chart for the exact product, then check the fit while sitting and moving. Your usual jeans size is only a starting point. A comfortable pair should stay close at the leg openings and keep its absorbent area in position without digging in or needing repeated adjustment.

This guide focuses on sizing washable underwear for bladder leaks. If you are still deciding which protection and style suit your routine, start with our women's incontinence underwear buying guide.

Start With Measurements, Not the Letter on the Label

Two pairs marked Medium can fit differently because their waist height, leg shape, fabric, and size charts differ. Check the specific style even when you already own another TIICHOO product.

You will need a flexible measuring tape, a mirror, and somewhere to note your results. Measure over bare skin or a thin, close-fitting layer, following any instructions on the product chart. Bulky trousers and loose clothing can change the reading.

Write down your actual measurements and units before comparing sizes. The scene is illustrative; the tape shown is not a size recommendation.

Measure your waist

Stand comfortably and breathe normally. For a standard waist measurement, place the tape around your natural waist, keeping it level and gently against your body. Do not pull it tight or hold your stomach in. If a particular chart shows a different measurement position, follow that chart.

Do not substitute the waistband measurement of your favorite low-rise trousers. Where a garment sits and the body measurement used to choose its size are not always the same.

Measure your hips

With your feet together, wrap the tape around the fullest part of your hips and seat. Use a mirror to check that it stays level across your back. Keep it close without compressing your body, then repeat the measurement to check the result.

Record waist and hip separately. Include whether you used inches or centimeters; one inch equals 2.54 centimeters. Avoid rounding down simply to fit a preferred size label.

A Real TIICHOO Size-Chart Example

The table below reproduces the size guide displayed for the TIICHOO 31001 high-waist seven-pack, checked on September 7, 2026. It is a reference for that product, not a universal chart for all TIICHOO underwear or other brands. Recheck the product's live Size Chart before ordering.

For example, a 31-inch waist and 41-inch hip both fall within this chart's Large row. That makes Large a chart-based starting point, followed by a comfort and movement check. It is not a guarantee of fit for every body shape.

The US-size column has overlapping ranges. When the label seems ambiguous, use the actual waist and hip measurements rather than choosing from the US number alone. Some measurements also fall between the listed ranges; do not invent a missing boundary.

Open the 31001 product and check its current Size Chart.

What If You Are Between Two Sizes?

First, measure again and confirm that the units are correct. Then look at both measurements together.

• Both fit the same row: Use that row as your starting point and assess the garment's cut.
• One fits a larger row: Do not automatically choose the smaller size just because your waist fits it. Check the product's guidance for the measurement that needs more room.
• Your measurements fall in a gap: Ask for product-specific sizing help, supplying your waist, hip, units, and the style name.
• A larger size fixes one area but creates gaps elsewhere: A different rise or leg shape may be more suitable.

Sizing up may be appropriate when the product guidance and your measurements support it. It should not be an automatic rule for every pair. Equally, sizing down to create a tighter seal can leave the waistband or leg edges uncomfortable.

For example, a waist in Medium and hips in Large does not mean you should average the labels. It means the chart does not give a straightforward single-row match. Resolve that fit question before buying a large rotation.

Continence Product Advisor's guidance on body shape explains that some fitting problems require a different product shape rather than a different size. A waistband problem and a rise problem can feel similar when you are trying a pair on.

Check the Fit in Four Places

Begin with the retailer's try-on and returns instructions. Keep required hygiene protections in place during an initial fitting. Before actual use, follow the garment's preparation and washing instructions.

Try sitting in a normal chair, standing up, taking a short walk, and bending gently if comfortable. Wear the type of outer clothing you actually plan to use. A pair that feels fine while standing may behave differently under fitted trousers or after sitting at a desk.

You should not need to pull the garment sharply upward to keep it in place. If you feel pain, persistent pressure, or irritation, stop the trial and reassess. There is no need to tolerate an uncomfortable pair to obtain protection.

Fit, Style, and Absorbency Are Separate Choices

Size determines how the garment fits your body. Style changes the coverage and position of the edges. Absorbency describes the product's stated protection level. Changing one does not reliably solve a problem with another.

For instance, the current 31001 seven-pack is listed as a high-waist style with 50ml absorbency for light bladder leaks. Selecting a larger clothing size is not a way to upgrade that product to protection for a full bladder release.

Product photograph from TIICHOO's current 31001 gallery. Judge your size from measurements and the product chart rather than the model's appearance.

If the waistband keeps rolling but the hips fit, compare the rise and where the waistband meets your body. If the leg edges are uncomfortable, compare a different cut. The women's styles guide covers high-waist briefs, seamless briefs, boyshorts, and long-leg options.

TIICHOO also offers boxer-style period shorts. That shape does not establish suitability for bladder leakage: check the intended use and size chart of the exact product. Period shorts and incontinence boyshorts should not be treated as interchangeable simply because both have short legs.

Compare current TIICHOO women's bladder-leak styles.

If a Pair Leaks, Check More Than Its Size

An edge leak can happen with a garment that gaps or shifts, but leakage alone does not prove that you need a smaller size. Look at what happened: was the pair already wet, did the absorbent area move, and did the leakage exceed the product's intended use?

A useful note records the style and size, activity, where the garment moved, and whether the leak happened soon after changing or later. This gives you more to work with than repeatedly ordering the next size up or down.

Once the fit works, use our women's underwear rotation guide to plan clean pairs, changes, washing, and drying. Change when the garment is wet or uncomfortable; do not deliberately test its limit or postpone a needed bathroom visit.

Absorbent underwear manages leakage rather than its cause. The NHS overview of incontinence products describes these products as practical support while people seek diagnosis or treatment. If bladder symptoms are new or worsening, arrange medical advice. NIDDK guidance advises prompt care for symptoms such as blood in urine, painful urination, or inability to pass urine.

Before You Order

Keep a short record of your waist and hip measurements, the product name, chosen size, and the chart you used. Check the fabric, rise, pack quantity, intended protection, care instructions, and current return or exchange terms on the product page.

If shopping for someone else, ask about waistband comfort, preferred coverage, and whether they can pull the garment on and off easily. Measurements help narrow the choice, but the wearer's comfort decides whether it works.

Use the women's styles comparison alongside your measurements.

Frequently Asked Questions

Should incontinence underwear feel tight?

It should stay close and stable without digging into your waist or legs. Tightness alone does not establish good protection. Check the fit after sitting and walking, not only when standing still.

Can I use my normal underwear size?

Use it as a reference, then check the current product chart. A familiar letter size does not account for differences in waist height, leg shape, material, or another brand's sizing.

Should I choose by waist or hip measurement?

Check both when the chart provides both. If they point to different sizes, follow product-specific advice or ask for sizing help. Do not ignore the measurement that needs more room.

Does sizing up give me more absorbency?

Do not assume so. Choose the clothing size for your body and the protection level for your usual leakage. A larger size in a light-leak style does not make it suitable for a full bladder release.

Why does the waistband roll even though the size seems right?

The rise, waistband position, body shape, movement, and fit can all matter. Recheck measurements and compare another cut if the current one repeatedly rolls. Rolling is not a reliable instruction to size up or down by itself.

Can I use this chart for period shorts or seamless briefs?

This example comes from style 31001. Open the exact period-shorts or seamless-brief product page and check its own chart. Also confirm whether it is intended for menstrual flow, bladder leakage, or both.

Related Guides and Sources

• Women's washable incontinence underwear buying guide
• Protection for coughing, sneezing, and exercise-related leaks
• Continence Product Advisor: body shape and product selection
• NHS: incontinence products
• NIDDK: bladder-control symptoms and when to seek care

Choose Your Next Pair With a Clear Fit Plan

Measure, check the exact chart, and assess comfort in normal movement. Once you find a style that stays comfortable and suits your leakage, build your rotation around it.

Browse TIICHOO women's washable incontinence underwear and open the Size Chart on your preferred product before selecting a size.