Anti-Leak Ostomy Panties
The Anti-Leak Ostomy Panties are SIIL's leakproof intimate underwear engineered for the moments when you need extra protection — post-stoma surgery recovery, menstruation, late-night security, or any day when a pouch leak feels possible. Built with a 4-layer absorbent gusset that locks in up to 200 ml of liquid, a soft antibacterial knit, a hidden inner pocket for the ostomy pouch, and a discreet black colourway that pairs with every wardrobe.
Anti-leak ostomy underwear
Most ostomates have experienced an unexpected pouch leak — at the office, on a long flight, in bed, during exercise. The Anti-Leak Panty adds a second layer of protection: even if the pouch leaks at the baseplate, the absorbent gusset captures up to 200 ml before any liquid reaches your clothes. Pair with our standard Sofía or Classic panties as your everyday option, and reach for Anti-Leak on the days you need backup.
Post-op recovery panties
The first 4–6 weeks after stoma surgery are when leaks are most common — your pouch fit is still being dialled in, the skin around the stoma is healing, and overnight accidents disrupt rest. The Anti-Leak Panty is the perfect post-op companion: the high-waist band sits above the surgical site without rubbing, the absorbent gusset gives you peace of mind through the night, and the soft antibacterial knit is gentle on healing skin.
Menstrual ostomy panties
For ostomates who menstruate, the Anti-Leak Panty doubles as period underwear — the same 4-layer gusset that captures pouch leaks also handles menstrual flow (light to medium days). One garment for two body experiences: ostomy + period. No more juggling tampons, pads and ostomy management on the same day.
Ileostomy & colostomy leak protection
The hidden inner pocket fits one-piece and two-piece pouches from Coloplast, Hollister, ConvaTec, B. Braun, Pelican, NuHope, Marlen and Welland — across ileostomy, colostomy and urostomy use cases. Ileostomates report the most leak incidents (output is more liquid); the Anti-Leak Panty's absorbent gusset is engineered for liquid effluent, not just menstrual flow.
Overnight ostomy panties
Sleep is when leaks happen most — you don't notice the pouch filling, you roll onto the baseplate, output sits against the skin for hours. The Anti-Leak Panty's gusset captures any overflow before it reaches sheets, pyjamas or skin. Many customers wear them every night for the first 6 months post-op, then on "high-risk" nights afterwards.
Anti-Leak Panties FAQ
How much liquid does the gusset absorb?
Up to 200 ml — equivalent to roughly one full ileostomy pouch. The 4-layer absorbent core is sealed with a leakproof membrane underneath so liquid stays in the gusset, not on your clothes or skin. This works for both pouch leaks and menstrual flow (light to medium days).
How does the absorbent gusset work?
The gusset has 4 functional layers: (1) skin-touch wicking layer that pulls liquid away from the body, (2) antibacterial silver-thread layer that suppresses odour, (3) high-capacity absorbent core, (4) waterproof membrane that prevents any seepage to the outside fabric. Together they handle 200 ml without showing through to clothing.
Can I wear them post-stoma surgery?
Yes — many stoma nurses recommend the Anti-Leak Panty as the go-to garment for the first 4–6 weeks post-op. The high-waist band sits above the surgical site, the soft antibacterial knit is gentle on healing skin, and the absorbent gusset gives you peace of mind through the night when leaks are most disruptive.
Do they double as period underwear?
Yes — the same 4-layer gusset works for menstrual flow on light to medium days. For heavy flow days, layer with a tampon or menstrual cup; the panty acts as backup protection against unexpected leaks.
How do I wash and care for them?
Rinse in cold water immediately after wear (this preserves the absorbent core's capacity). Machine-wash at 30 °C on a gentle cycle, inside out, with similar dark colours. Air-dry flat — do NOT tumble-dry (heat damages the waterproof membrane). Avoid bleach and fabric softener. With normal care, one pair lasts 12+ months.
Will Anti-Leak fit my ostomy pouch?
Yes — the inner pocket is sized to fit one-piece and two-piece pouches from Coloplast, Hollister, ConvaTec, B. Braun, Pelican, NuHope, Marlen and Welland — across ileostomy, colostomy and urostomy use cases. The pocket fabric is stretch elastic so it adapts to different pouch shapes and capacities.







- The inner pocket holds your pouch close.Pouch stays close
- A gusset that holds up to 200 ml.Up to 200 ml
- High waist, under your clothes.High waist
- Free US shippingOrders over $100 · ships in 24h
- 30-day returnsSubject to the return conditions
- Pouch-compatibleColoplast · Hollister · ConvaTec
- Discreet packagingPlain box, your privacy first
"My ileostomy was new and leaks were happening every other night. Anti-Leak panties caught a 150 ml leak last week — pyjamas dry, sheets dry, sanity intact. Wish I had them from day one."
Sarah M. · USARecommended by · Featured in
The pocket holds the pouch. The gusset is there if something gets past it.
A soft inner pocket holds your pouch against your body, so it moves less through the day.
Four layers in the gusset, up to 200 ml. A spill stays in the brief.
It sits above the stoma and still reads as underwear. The pocket stays on the inside.
Soft knit you can sleep in. The gusset is still there.
Getting dressed, making the bed, packing a bag. The same beige brief.
Choosing an outfit
Fresh sheets
Weekend away
Watering the plants
Catching up
At the easelPut it on like any high-waist brief. The pocket holds the pouch. The gusset is the backup.

The fabric against your skin carries moisture down into the gusset.

Silver thread plus an absorbent core. The gusset holds up to 200 ml.

The outer layer keeps what the gusset catches off your clothes.
- 1 New Ostomy Patient Guide What to expect in your first 30 days — surgery to confidence.
- 2 Stoma Care Playbook Daily routine, leaks, irritation, supplies, travel — solved in plain language.
- 3 Nutrition Guide What to eat to thicken output and prevent leaks. Day, week, swim-day.
A pocket for the pouch, and a gusset for what gets past it.

Four layers. If something gets past the pouch, it stays in the gusset instead of reaching your clothes.
Choose your size
Wear it to bed the same way you wear it in the day. The gusset is still there.
Shop Anti-Leak
The same gusset is there for menstrual flow on light to medium days.
Add yours to cart
The inner pocket holds the pouch close under dresses and jeans.
Add yours to cart8,248 verified reviews across SIIL products
Saved my first month post-op
"My ileostomy was new and leaks were happening every other night. Anti-Leak panties caught a 150 ml leak last week — pyjamas dry, sheets dry, sanity intact. Wish I had them from day one."
Period + ostomy in one panty
"Game-changer for me. I have an ileostomy AND I menstruate. Anti-Leak handles both. No more tampon-pad-pouch juggle every period. Bought 5 pairs after the first wash."
Finally sleep without checking
"I used to wake every 2–3 hours to check the pouch. Now I wear Anti-Leak and sleep 7 hours straight. Even when I had a baseplate failure, the panty caught it. Worth every penny."
Confidence on a long flight
"Ten-hour flight to see family. Pre-Anti-Leak I would've been terrified of an in-seat leak. With the panty as backup I just enjoyed the flight. Pouch held — but I had insurance."
No odour, no smell, even after a leak
"The silver-thread layer really works. Had a small leak overnight, got up, rinsed the panty in cold water, washed normally — zero smell after. Better than expected."
Stoma nurse recommended these
"My stoma nurse insisted I wear Anti-Leak for the first 6 weeks post-op. She was right. Caught two overnight leaks in week 2 when my pouch fit wasn't dialled in yet. Thank you SIIL."
Same waist. Different day.
Pieces often worn with the Anti-Leak panties
Measure your natural waist and hip with a soft tape over light clothing.
| Size | Waist (in) | Hip (in) | Best for |
|---|---|---|---|
| XS | 22.8–24.8 | 33.1–34.6 | EU 34–36 · Petite |
| S | 25.2–27.6 | 35.0–36.6 | EU 36–38 · Slim |
| M | 28.0–29.9 | 37.0–38.6 | EU 38–40 · Most common |
| L | 30.3–31.9 | 39.0–40.6 | EU 40–42 · Curvier |
| XL | 32.3–33.9 | 40.9–42.5 | EU 42–44 · Plus |
| XXL | 34.3–35.8 | 42.9–44.5 | EU 44–46 · Extended plus |
Everything ostomates ask before their first SIIL panties.
How much liquid does the gusset absorb?
Up to 200 ml — equivalent to roughly one full ileostomy pouch. The 4-layer absorbent core has a waterproof outer membrane that prevents any seepage to clothing, sheets or skin. This works for both pouch leaks and menstrual flow on light to medium days.
Should I wear Anti-Leak post-op?
Yes — many stoma nurses recommend wearing Anti-Leak panties for the first 4–6 weeks after stoma surgery. The high-waist band sits above the surgical site without rubbing, the soft antibacterial knit is gentle on healing skin, and the absorbent gusset gives you peace of mind through the night when leaks are most disruptive.
Do they double as period underwear?
Yes — the same 4-layer gusset works for menstrual flow on light to medium days. For heavy flow, layer with a tampon or menstrual cup; the panty acts as backup protection against unexpected leaks. One garment for two body experiences (ostomy + period).
How do I wash Anti-Leak?
Rinse in cold water immediately after wear (this preserves the absorbent core's capacity). Then machine-wash at 30 °C on a gentle cycle, inside out, with similar dark colours. Air-dry flat — do NOT tumble-dry (heat damages the waterproof membrane). Avoid bleach and fabric softener. With normal care, one pair lasts 12+ months.
Will the gusset feel bulky or uncomfortable?
No — the 4 layers are slim (about 4 mm total) and integrated seamlessly. Most customers report forgetting they're wearing them. The fabric is soft, breathable, antibacterial silver-thread; the gusset shape contours to the body without bunching or rubbing.
How do I pick the right size?
Measure your natural waist (the narrowest part above your belly button) and your hip at the widest point. Use the size guide above the Add-to-cart button. Between sizes? Choose the larger — the soft knit adapts down 4 cm comfortably. We accept exchanges within 30 days.
Will Anti-Leak fit my ostomy pouch?
Yes — the hidden inner pocket is sized to fit one-piece and two-piece pouches from Coloplast, Hollister, ConvaTec, B. Braun, Pelican, NuHope, Marlen and Welland. The pocket fabric is stretch elastic so it adapts to different pouch shapes and capacities — ileostomy, colostomy and urostomy.
What if Anti-Leak doesn't work for me?
30-day no-questions-asked returns. If the size or fabric isn't right, email hola@siilostomy.com and we'll refund or exchange. Used items are accepted for hygiene-relevant ostomy underwear — we re-process all returns through our medical-grade hygiene protocol.




