Plus Size Period Underwear (XS to 4XL)
Plus size fit
Quick answer
Kischt plus size period underwear comes in sizes XS to 4XL, including XL, 2XL, 3XL and 4XL. It is a high-waisted brief with a broad waistband, a full back and three absorbent layers. Use the size chart to find your fit.
Kischt Period Underwear, Noir (black), $24.95. 30-day returns. Free shipping over $50.

- Sizes XS to 4XL, including XL, 2XL, 3XL and 4XL.
- A broad waistband made to feel secure without digging in.
- A high rise and full back coverage.
- Three absorbent layers, made for heavier flow days.
- Six colors: Noir, Cloud, Bordeaux, Praline, Truffle and Crème.
Plus size period panties, XL to 4XL
Kischt comes in eight sizes: XS, S, M, L, XL, 2XL, 3XL and 4XL. The largest size is 4XL.
Use the size chart to find your fit. If you are between sizes, follow the size chart.

Made to feel secure
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A broad waistband
The wide waistband should feel secure without digging in.
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A high rise
It comes up high to cover your lower tummy.
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A full back
The back has full coverage. The gusset, the protective part in the crotch, runs up toward the back. That gives extra cover when you sit or lie down.
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Soft stretch
Nylon and elastane make it soft and stretchy. It feels light, with a fine, mesh-like texture.
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Three absorbent layers
They are made for heavier flow days. A moisture barrier helps stop leaks reaching your clothes.
How to find your plus size period underwear fit
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Grab a soft tape
Measure yourself the way the size chart shows.
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Match the size chart
Find the size that fits your numbers. If you are between sizes, follow the size chart.
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Try it on
The waistband should feel secure without digging in. The back should cover your bottom.
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Not sure? Check the returns
You have 30 days after you get your order to ask for a refund. Read the return policy first.
Wearing it on your period
Change it when it feels damp, full or uncomfortable. On your heaviest days, you can pair it with a tampon, cup or pad.
Wash it after each wear and follow the care label. Let it dry fully before you wear it again.
Sizes, colors and prices
- Sizes
- XS to 4XL (XS, S, M, L, XL, 2XL, 3XL, 4XL). Check the size chart on the product page.
- Colors
- Noir (black), Cloud (white), Bordeaux (maroon), Praline (almond), Truffle (hazelnut brown) and Crème (cream).
- Price
- $24.95 a pair. 3-pack $59.95 ($19.98 a pair). 5-pack $89.95 ($17.99 a pair).
- Fabric
- Soft, breathable nylon and elastane.
- Care
- Wash after each wear and follow the care label. Let it dry fully before you wear it again.

Find your size, XS to 4XL
Kischt Period Underwear, Noir (black) · $24.95
You have 30 days to request a refund. Free shipping over $50.
Shop sizes XS to 4XLOr save with the 5-pack: $17.99 a pair
Questions? Email hello@kischt.com.
Common questions
Does Kischt make plus size period underwear?
Yes. Kischt comes in sizes XS to 4XL, including XL, 2XL, 3XL and 4XL.
Do you have 5X period panties?
No. The largest Kischt size is 4XL. Check the size chart to see if 4XL fits you.
What if I am between sizes?
Follow the size chart to choose. Kischt has a 30-day return policy.
What is the best plus size period underwear?
The best pair fits your body and your flow. Check the size range, the waistband and the back coverage. Kischt goes up to 4XL, with a broad waistband and a full back.
Is plus size leak-proof underwear good for heavy flow?
Kischt is made for heavier flow days, with three absorbent layers. It is leak-resistant, so change it when it feels damp or full.
More guides
- High-waisted fitHigh-Waisted Period Underwear With Full Coverage
- Heavy flow guide5 Reasons Kischt Works for Heavy Periods
- Packs and bundlesPeriod Underwear Packs: 3-Pack and 5-Pack
- Period underwearPeriod Underwear for Women: Soft and Reusable
See all guides: Period Underwear Guide: Every Question Answered
Updated by the Kischt team.
Returns: you have 30 days after you get your order to request a refund. Details are in the return policy.