Teen First Period Kit
Teen First Period Kit
Her first period, handled.
Three leakproof pairs and a discreet carry case for school, sports, heavy days and overnight.
Save $160+ over two years.
Based on typical disposable-product costs; actual savings may vary.
Not started yet? Keep the kit ready so she has the right protection from day one.
First Pair Comfort Guarantee
Try them for 30 days. Worn is fine.
She can wear them, wash them, sleep in them. If they don't fit or she isn't comfortable, exchange for another size or send them back for a refund.
Terms
contact us within 30 days and we'll help with an exchange or refund.
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Protection that pays off
What’s included
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Seamless Low-Rise Leakproof Brief 2 pairs · 40ml
Absorbs like 8 tampons · up to 10 hours. School, PE and sport.
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Teen Bamboo Comfort Leakproof Brief 1 pair · 50ml
Absorbs like 10 tampons · up to 12 hours. Heaviest days and overnight.
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Cheeki Period Pouch 1 included
Discreet enough for her backpack, with room for a spare pair and supplies. A separate wash-and-care insert includes a QR code linking to care information; a first-period guide is not currently included.
Tampon comparisons are based on 5ml per light tampon.
Sizing
Getting the size right
Her pant size is usually enough — no tape measure needed. If you’d rather be exact, her hip measurement is in the last column.
| Size | Kids pant | Adult pant | Pant size | Hip |
|---|---|---|---|---|
| XS | 8–10 | — | Kids 8–10 | 28–30″ |
| S | 12–14 | 00–2 | Kids 12–14 · Adult 00–2 | 31–34″ |
| M | 16–20 | 4–8 | Kids 16–20 · Adult 4–8 | 35–38″ |
| L | — | 10–14 | Adult 10–14 | 39–42″ |
| XL | — | 16–18 | Adult 16–18 | 43–46″ |
Choose one size and we pack the kit to match. The Teen Bamboo Overnight Brief comes in single sizes; the two Seamless Low-Rise Briefs come in paired sizes — 2XS/XS, S/M, L/XL — because the seamless fabric stretches across two. If the label on those pairs shows two sizes, that’s the right pair.
How to measure
- 1
Use a soft tape
A fabric tape gives the most accurate reading.
- 2
Measure the hips
Around the fullest part of the hips and seat.
- 3
Keep it level
Parallel to the floor, and don’t pull it tight.
- 4
Check the number
Between two sizes? Take the larger of the two — snug is what makes it leakproof.
First period? Start here.
Order the size that fits her now, not the size she’s growing into. Leakproof underwear works by sitting close, so a pair with room to grow will leak. If the fit isn’t right out of the box, exchanges are free.
WHAT'S IN THE BOX
Which pair for which day
Three pairs and the pouch they live in, so she has the right one whatever her day looks like. Same 4-layer leakproof core in both styles — they differ in how much they hold.
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SCHOOL, PE & SPORT
Seamless Low-Rise Leakproof Brief
The two she'll wear most. No seams to show under leggings, uniform skirts or a netball skort, and nothing that shifts when she runs.
40ml
Absorbs like 8 tampons
Up to 10 hours
Two pairs in the kit
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HEAVIEST DAYS & OVERNIGHT
Teen Bamboo Comfort Leakproof Brief
Sits higher, holds more and sleeps softer — the one most girls reach for at night.
50ml
Absorbs like 10 tampons
Up to 12 hours
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AWAY FROM HOME
Cheeki Period Pouch
A discreet, easy-to-pack place for everything she might need if her period starts away from home. Keep it stocked in her backpack so she can feel prepared for school, sleepovers and wherever the day takes her.
Fits a backpack or PE bag pocket
Room for a spare pair and supplies
Wear times are for a normal flow. On a heavier day she'll want to change sooner, or wear the bamboo pair. Tampon comparisons are based on 5ml per light tampon.
Hear it from the moms
Real families, in their own words.
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“"Instead of feeling nervous and unprepared, she felt ready."”
Paid partnership
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“"No bulky pads, no shifting, just way more confidence."
Paid partnership
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“She said the seamless felt just like regular underwear.”
Paid partnership
A better way to handle her period
See how Cheeki compares to traditional period products
| Pads | Tampons | Teen First Period Kit ✓ our pick |
|
|---|---|---|---|
| Made without PFAS | ✗ some have tested positive | ✗ some have tested positive | ✓ made without PFAS |
| Soft on skin | ✗ synthetic top layer | ✗ worn internally | ✓ soft, breathable fabric |
| Stays in place all day | ✗ can shift & bunch | ~ yes | ✓ moves with her |
| No crinkle or noise at school | ✗ noisy wrapper | ~ yes | ✓ nothing to unwrap |
| Hours per change | ✗ every 4–8 hrs | ✗ every 4–8 hrs | ✓ up to 12 hours overnight |
| Leak protection | ✗ can shift & leak | ✗ can overflow | ✓ leakproof guarantee |
| Reusable | ✗ single use | ✗ single use | ✓ washable, lasts 2+ years |
| Cost over 2 years | $240–$360 | $240–$360 | $89 once |
Comparison reflects typical disposable period products, not any specific brand. Cost estimates assume $10–15 per month in disposables; actual spend varies. PFAS references are to independent third-party testing of some products in these categories.
What makes Cheeki different
Built for teens. Trusted by moms.
Made without PFAS
Independent testing has found PFAS "forever chemicals" in some period products. Cheeki is made without intentionally added PFAS or harmful dyes, and our fabric is OEKO-TEX Standard 100 certified.
Soft bamboo viscose for sensitive skin
Most period underwear uses synthetic or cotton-blend fabrics. Cheeki uses viscose made from bamboo — soft, breathable, and gentle against skin through a long day of wear.
Absorbency for her heaviest days
The kit's two Seamless Low-Rise Briefs each hold up to 40ml — around eight tampons' worth — for school, sports and everyday wear. The Teen Bamboo Overnight Brief holds up to 50ml — around ten tampons' worth — and provides up to 12 hours of protection for heavy days and sleep.
The Cheeki Period Pouch, included
A quilted zip pouch that looks like a make-up bag, so she's always prepared — at school, at practice, or sleeping over at a friend's house. Lined in nylon, so the pair she changed out of comes home with her.
Less waste, every cycle
A teen can go through thousands of pads and tampons. Cheeki is washable and lasts 2+ years, replacing hundreds of disposables along the way.
Breathable through a long day
Bamboo viscose is breathable and moisture-wicking, so she stays comfortable and feeling fresh through school, sports, and overnight wear.
Frequently Asked Questions (FAQs)
That's the most common reason parents buy this kit. She can keep a pair in her backpack in the carry case and wear them on days she thinks it might start. Nothing about them looks or feels like period underwear.
Order to her current hip measurement, not her age. All three pairs come in the same size, so you choose once. Our size chart is on this page — if she's between sizes, size up; these are meant to sit snug but never tight.
No. The two seamless pairs have no visible edges under leggings or a school uniform. The Teen Bamboo Comfort Leakproof Brief sits a little higher and is the one most girls prefer for sleeping.
No — Cheeki is designed as a complete replacement for pads and tampons. The Teen Bamboo Comfort Leakproof Brief holds up to 50ml and provides up to 12 hours of protection. The two Seamless Low-Rise Leakproof Briefs hold up to 40ml each and provide up to 10 hours — enough for a full school day. On very unpredictable first periods, some girls add a liner for extra peace of mind while they're getting comfortable.
Yes. The Teen Bamboo Comfort Leakproof Brief holds up to 50ml and provides up to 12 hours of protection, with full coverage for overnight wear.
It's everything she needs for her first period in one box: two Seamless Low-Rise Leakproof Briefs, one Teen Bamboo Comfort Leakproof Brief, and one Cheeki Period Pouch. A separate wash-and-care insert includes a QR code linking to care information. No printed first-period guide is currently included.
Two Seamless Low-Rise Leakproof Briefs — 40ml each, absorbs like 8 tampons, up to 10 hours.
One Teen Bamboo Comfort Leakproof Brief — 50ml, absorbs like 10 tampons, up to 12 hours.
Plus one Cheeki Period Pouch. A separate wash-and-care insert includes a QR code linking to care information; a first-period guide is not currently included.
The Teen Bamboo Comfort Leakproof Brief holds up to 50ml — the equivalent of about 10 tampons — and is the one she'll want on her heaviest days and overnight. The two Seamless Low-Rise Leakproof Briefs hold up to 40ml each — about 8 tampons — and are made for school, PE and sport. Both styles use the same 4-layer leakproof core. Tampon comparisons are based on 5ml per light tampon.
That depends on which pair and how heavy her flow is that day.
The Teen Bamboo Comfort Leakproof Brief holds 50ml and provides up to 12 hours of protection — enough for a full night.
The two Seamless Low-Rise Leakproof Briefs hold 40ml each and provide up to 10 hours, which covers a normal school day. On a heavier day she'll want to change sooner, or wear the bamboo pair instead.
Cheeki underwear is easy to care for. After use, rinse in cold water until the water runs clear, then machine wash cold with like colors. Tumble dry low or air dry. Avoid bleach and fabric softeners to maintain absorbency and extend the life of your underwear.
New to Period Underwear? Start Here
Guides for teens, first periods, and anyone making the switch.
What Is Period Underwear and How Does It Work?
How to Wash and Care for Period Underwear
Pads vs. Tampons vs. Period Underwear
