Size Guide
Finding your perfect fit should feel easy — and comfort always comes first.
Finding her size shouldn’t be stressful — we’ve got you. Teen sizing goes by hip measurement, which gives the most accurate, comfortable fit for period underwear. If she’s between sizes or prefers a relaxed fit, we recommend sizing up for comfort.
| Cheeki Size | Hip (inches) | Pant Size |
|---|---|---|
| XXS | 25–27" | Kids 7 |
| XS | 28–30" | Kids 8–10 |
| S | 31–34" | Kids 12–14 |
| M | 35–38" | Kids 16–20 |
| L | 39–42" | Adult 10–14 |
| XL | 43–46" | Adult 16–18 |
Bigger than a 46" hip? Our XXL is on the Women’s chart.
How to choose her size
Every body is different — and that’s completely normal.
- Measure around the fullest part of the hips and match to the chart — this gives the most accurate, comfortable fit.
- No tape measure handy? Use her usual pant size as a starting point — kids’ sizes for our smaller fits, adult sizes for L and XL.
- If she’s between sizes or prefers a relaxed fit, size up for comfort.
Teen period fit tips
- Light days or everyday wear: stick with her usual size.
- Heavy flow, bloating, or overnight wear: consider sizing up for a little extra room.
- Prefer a snug, secure fit? Stay true to size.
- Prefer a relaxed, comfy feel? Size up.
Remember: bodies can change day to day — choosing comfort is always the right choice.
We believe underwear should fit your body — not the other way around. Go by your usual size, and if you’re between sizes, sizing up is always a safe choice for comfort.
| Cheeki Size | Hip (inches) | US Pant / Dress Size |
|---|---|---|
| S | 31–34" | 00–2 |
| M | 35–38" | 4–8 |
| L | 39–42" | 10–14 |
| XL | 43–46" | 16–18 |
| XXL | 47–50" | 20–22 |
Smaller than a 31" hip? Our XXS and XS sizes are on the Teen chart — same fit, smaller cut.
How to choose your size
- Measure around the fullest part of your hips and match your number to the chart above — hip is the most accurate guide.
- Not sure of your measurement? Use your usual US pant or dress size as a starting point.
- If you’re between sizes, we recommend sizing up for extra comfort.
Period day fit tips
- Light days or everyday wear: stick with your usual size.
- Heavy flow, bloating, or overnight wear: consider sizing up for a little extra room.
- Prefer a snug, secure fit? Stay true to size.
- Prefer a relaxed, comfy feel? Size up.
If comfort is your priority (and it usually is), sizing up is always a safe choice.
Then match your absorbency
Pick your size for fit, then your absorbency for your flow.
Light
20ml • up to 4 tampons*
Feels: surprisingly sleek.
For: the start or end of your cycle, or “just in case.”
Medium
30ml • up to 6 tampons*
Feels: slim and safe.
For: heavier days.
Super
50ml • up to 10 tampons*
Feels: soft and reliable.
For: heaviest days and overnight.
*Based on a 5ml tampon.
Need help choosing a size?
We’re real women who actually wear these — tell us a little about the fit you’re after and we’ll point you to the right pair.
Email us for sizing help