Teens Period Bikini Brief Underwear
Teens Period Bikini Brief Underwear
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Leak-proof protection for up to 8 hours
Extended gusset
Stretchy comfortable fit
Feel drier for longer
Easy to clean and reusable
Environmentally friendly
Size Guide
Here’s a size guide to inform your shopping decision(s)
Mid Waist Bikini
Waist: Measures below the waist, where the top of the bikini sits.
Hips: Measures the widest part of your hips
| SIZE | US | UK | EU | HIPS | HIPS | WAIST | WAIST |
|---|---|---|---|---|---|---|---|
| CM | INCH | CM | INCH | ||||
| 4XS | 000-00 | 0-2 | 28 | 78.5-81 | 31-32 | 58.4 | 23 |
| 3XS | 00-0 | 2-4 | 30 | 83.5-86 | 33-34 | 61 | 24 |
| 2XS | 0-2 | 4-8 | 32 | 88.5-91 | 35-36 | 66 | 26 |
| XS | 2-4 | 6-8 | 34 | 93.5-96 | 36.5-38 | 71 | 28 |
| S | 4-6 | 8-10 | 36 | 98.5-101 | 38.5-39.5 | 75 | 29.5 |
| M | 6-8 | 10-12 | 38 | 103.5-106 | 40.5-41.5 | 80 | 31.5 |
| L | 8-10 | 12-14 | 40 | 108.5-111 | 42.5-43.5 | 84 | 33.1 |
| XL | 10-12 | 14-16 | 42 | 113.5-116 | 44.5-45.5 | 89 | 35 |
| 2XL | 12-14 | 16-18 | 44 | 118-123 | 46.5-48.5 | 93 | 36.6 |
| 3XL | 14-16 | 18-20 | 46 | 125-128 | 49.5-50.5 | 98 | 38.9 |
Note: Please allow for a tolerance of +/- 1 inch
If the bikini is not suitable, please contact us directly. We will aim to get back to you within 24 hours.
High Waist Bikini
Waist: Measures below the waist, where the top of the bikini sits.
Hips: Measures the widest part of your hips
| SIZE | US | UK | EU | HIPS | HIPS | WAIST | WAIST |
|---|---|---|---|---|---|---|---|
| CM | INCH | CM | INCH | ||||
| 3XS | 0 | 4 | 32 | 78.5-81 | 31-32 | 55 | 21.6 |
| 2XS | 2 | 6 | 34 | 83.5-86 | 33-34 | 58.8 | 23 |
| XS | 4 | 8 | 36 | 88.5-91 | 35-36 | 61 | 24 |
| S | 6 | 10 | 38 | 93.5-96 | 36.5-38 | 66 | 26 |
| M | 8 | 12 | 40 | 98.5-101 | 38.5-39.5 | 71 | 28 |
| L | 10 | 14 | 42 | 103.5-106 | 40.5-41.5 | 75 | 29.5 |
| XL | 12 | 16 | 44 | 108.5-111 | 42.5-43.5 | 80 | 31.5 |
| 2XL | 14 | 18 | 46 | 113.5-116 | 44.5-45.5 | 84 | 33.1 |
| 3XL | 16 | 20 | 48 | 118-123 | 46.5-48.5 | 89 | 35 |
Note: Please allow for a tolerance of +/- 1 inch
If the bikini is not suitable, please contact us directly. We will aim to get back to you within 24 hours.
Mid Waist Bikini
Waist: Measures below the waist, where the top of the bikini sits.
Hips: Measures the widest part of your hips
| SIZE | US | UK | EU | HIPS | HIPS | WAIST | WAIST |
|---|---|---|---|---|---|---|---|
| CM | INCH | CM | INCH | ||||
| 4XS | 000-00 | 0-2 | 28 | 78.5-81 | 31-32 | 58.4 | 23 |
| 3XS | 00-0 | 2-4 | 30 | 83.5-86 | 33-34 | 61 | 24 |
| 2XS | 0-2 | 4-8 | 32 | 88.5-91 | 35-36 | 66 | 26 |
| XS | 2-4 | 6-8 | 34 | 93.5-96 | 36.5-38 | 71 | 28 |
| S | 4-6 | 8-10 | 36 | 98.5-101 | 38.5-39.5 | 75 | 29.5 |
| M | 6-8 | 10-12 | 38 | 103.5-106 | 40.5-41.5 | 80 | 31.5 |
| L | 8-10 | 12-14 | 40 | 108.5-111 | 42.5-43.5 | 84 | 33.1 |
| XL | 10-12 | 14-16 | 42 | 113.5-116 | 44.5-45.5 | 89 | 35 |
| 2XL | 12-14 | 16-18 | 44 | 118-123 | 46.5-48.5 | 93 | 36.6 |
| 3XL | 14-16 | 18-20 | 46 | 125-128 | 49.5-50.5 | 98 | 38.9 |
Note: Please allow for a tolerance of +/- 1 inch
If the bikini is not suitable, please contact us directly. We will aim to get back to you within 24 hours.
Mid Waist Bikini
Waist: Measures below the waist, where the top of the bikini sits.
Hips: Measures the widest part of your hips
| SIZE | US | UK | EU | HIPS | HIPS | WAIST | WAIST |
|---|---|---|---|---|---|---|---|
| CM | INCH | CM | INCH | ||||
| 4XS | 000-00 | 0-2 | 28 | 78.5-81 | 31-32 | 58.4 | 23 |
| 3XS | 00-0 | 2-4 | 30 | 83.5-86 | 33-34 | 61 | 24 |
| 2XS | 0-2 | 4-8 | 32 | 88.5-91 | 35-36 | 66 | 26 |
| XS | 2-4 | 6-8 | 34 | 93.5-96 | 36.5-38 | 71 | 28 |
| S | 4-6 | 8-10 | 36 | 98.5-101 | 38.5-39.5 | 75 | 29.5 |
| M | 6-8 | 10-12 | 38 | 103.5-106 | 40.5-41.5 | 80 | 31.5 |
| L | 8-10 | 12-14 | 40 | 108.5-111 | 42.5-43.5 | 84 | 33.1 |
| XL | 10-12 | 14-16 | 42 | 113.5-116 | 44.5-45.5 | 89 | 35 |
| 2XL | 12-14 | 16-18 | 44 | 118-123 | 46.5-48.5 | 93 | 36.6 |
| 3XL | 14-16 | 18-20 | 46 | 125-128 | 49.5-50.5 | 98 | 38.9 |
Note: Please allow for a tolerance of +/- 1 inch
If the bikini is not suitable, please contact us directly. We will aim to get back to you within 24 hours.
- Details
- How it fits / Size guide
- Delivery
- Returns
Comfort they’ll love - Protection you can trust.
Give your tween or teen the confidence they deserve with our Savvi Wear Teen Period Bikini Briefs - soft, stretchy, leakproof underwear designed to look and feel like their regular favorite undies. Perfect for school days, sports, sleepovers, or early period cycles, these bikini briefs deliver the comfort they want and the protection they need.
Why They’ll Love Them
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Stay leak-free at school or sleepovers with built-in absorbency for light–moderate flow (up to 15ml / 3 tampons)
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Feel dry and fresh all day thanks to breathable moisture‑wicking bamboo lining
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No shifting or bunching - fits like normal underwear, without bulky pads
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Super soft, stretchy, and gentle on sensitive skin with a smooth mid-waist fit
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Eco‑friendly & reusable - ditch disposable pads and save money
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Designed just for teens & tweens (ages 8 - 16), with fun, stylish color options
What Makes SavviWear™ Gusset Technology Better?
Every pair is powered by our exclusive SavviWear™ triple‑layer gusset system, engineered for real teen life - movement, sports, long school days, and comfort.
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Extended gusset for better coverage ensures full coverage while sitting, sleeping, or moving (unlike standard period briefs)
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Absorbs up to 15ml (3 tampons) - ideal for light to moderate flows
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Bamboo charcoal lining for odor control and moisture wicking
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Triple-layer leakproof core that pulls moisture away, locks it in, and blocks leaks
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Sewn‑down gusset construction - no rolling, no bunching, no shifting
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Feels lightweight & discreet, even under leggings or school uniforms
SavviWear™ = protection that feels invisible, but works brilliantly.
Materials & Care
Materials
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Outer: 88% Polyamide, 12% Spandex
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Gusset Lining: 50% Bamboo Viscose, 50% Polyester
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Leakproof Layer: Cotton, Spandex + Waterproof TPU
Care
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Rinse after use, machine wash cold (delicates bag recommended), hang dry. No softeners.
Designed For:
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Tweens & teens (ages 8 - 16)
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Light–moderate period flow days
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Backup for tampons or cups
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School, sports, dance, gymnastics & everyday wear
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First-period confidence
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Light bladder leaks or discharge
Available in Sizes 4XS–L
Colors: Black, Lavender, Pink Brush Strokes
Period Protection That Grows With Her
With buttery-soft comfort, stylish colors teens love, and the leakproof power of SavviWear™, these bikini briefs give young girls the confidence they need - every day of their cycle.
Please click here to discover your perfect fit.
We aim to send all orders out by the next working day.
USA: 5-7 working days
Canada & Mexico: 5-10 working days
Europe: 5-10 working days
Rest of the World: 5-15 working days
Please visit our shipping page here to find out more.
Enjoy complimentary shipping on orders over $50.
If you need to make a change within 30 days of receiving your order, we offer exchanges for a different size or style, or you can opt for store credit. Please note, we do not offer refunds on underwear purchases.