1. Home
  2. /
  3. Women
  4. /
  5. Women's Underwear
  6. /
  7. Thongs
  8. /
  9. Period & Leak Proof - Thong - Light
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
XS-4XL
Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black Period & Leak Proof - G-String - Light - Black
XS-4XL
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black
Period & Leak Proof - G-String - Light - Black

Period & Leak Proof - Thong - Light

In Period Seamfree Fabric

$24.00USD

Unlock FREE Slouch Socks with any AiraRib™ Top + Bottom

Colour:
Size
Size Guide
Pack Size

Spend $60+ for Free Economy Shipping within 48 Contiguous States

Earn 24 points when you purchase this product  Log in
Features
Breathable
Leak Proof Technology
Non-Toxic
Odour Resistant
PFA Free
Light Absorbency
Size & Fit
Runs small
True to size
Runs large
  • Low-rise, g-string cut for barely-there feel and minimal coverage.
  • Soft ribbed waistband and seamfree design for ultimate comfort.
  • Machine washable with fast-absorbing leakproof technology.
  • Single-layered towelling gusset protection ensures freshness and dryness.
  • Designed for your lightest period days, occasional leaks, and discharge.
  • Absorbency: Up to 1 tampon, 1 pad, holds 5ml.
  • Certified as 100% PFA-free.
Outer: 79% Viscose made from bamboo, 15% Nylon, 6% Elastane. Gusset 1 : 100% Cotton. Gusset 2: 72% Viscose made from bamboo, 28% Cotton. Gusset 3: 86% Modal, 7% Seaweed Fibre, 7% Elastane.
Wash before wear, after use rinse with cold water until water runs clear. Machine wash cold with similar colors, gentle cycle. Do not bleach. Do not tumble dry, flat dry in shade. Do not iron. Do not dry clean.
  • Free shipping on US orders over US$60.
  • Free shipping on CA orders over CA$110.
  • Fast delivery, track your order easily. Learn more about shipping and delivery.
  • Easy returns process, accepted within 30 days of purchase. Learn more about our returns policy.
  • Items purchased at a discounted price during promotional sale events are eligible for exchange or store credit only.
  • Final sale items cannot be exchanged or returned.
  • Only unopened Underwear can be returned.
Size chart
We are here to help you choose your perfect fit
UNDERWEAR SIZE CHART
Model Bio
Model's Photo - Caitlin Murphy

Caitlin


Height:183cm (6' 0")
Waist:86cm (33.9")
Bust:100cm (39.4")
Hips:121cm (47.6")
Wears: Size XL Boody Bottom

Model's Photo - Jessica Turnbull

Jessica


Height:171cm (5' 7")
Waist:98cm (38.6")
Bust:121cm (47.6")
Hips:141cm (55.5")
Wears: Size 2XL Boody Bottom

Model's Photo - Maddy Zanatta

Maddy


Height:165cm (5' 5")
Waist:94cm (37")
Bust:123cm (48.4")
Hips:132cm (52")
Wears: Size 3XL Boody Bottom

Complete The Look

Period & Leak Proof - G-String - Light

Why is this product perfect for you?

  • Low-rise, Thong cut for barely-there feel and minimal coverage.
  • Soft ribbed waistband and seamfree design for ultimate comfort.
  • Machine washable with fast-absorbing leakproof technology.
  • Single-layered towelling gusset protection ensures freshness and dryness.
  • Designed for your lightest period days, occasional leaks, and discharge.
  • Absorbency: Up to 1 tampon, 1 pad, holds 5ml.
  • Certified as 100% PFA-free.

Why We Made This

Your favourite Thong shape, now made leakproof for your lightest days. We took the barely-there cut you love and added discreet, fast-absorbing protection for light flow, leaks, and daily discharge. Crafted with a soft ribbed waistband, seamless design, and a lightly padded gusset that holds up to 1 tampon (5ml), the Period and Leakproof Thong sits smooth, stays minimal, and never gives “period undie.” Zero bulk, zero bother. More “I can still wear a Thong”.

Frequently Asked Questions

Here are the questions other people ask about this product.

They feature a low-rise, thong cut for barely-there feel and minimal coverage. If you’re a fan of our Original Thong, these are for you.

They offer Light absorbency, holding up to 5ml, equivalent to up to 1 regular tampon or 1 regular pad.

Yes. On lighter days, many people wear them comfortably throughout the day, depending on personal flow and preference.

The underwear features fast-absorbing, built-in leak protection, including a double-layered towelling gusset that helps absorb moisture and keep you feeling dry.

No. The absorbent layers are integrated into the underwear, so they feel much more like your everyday underwear.

Yes. They are certified 100% PFAS & Silver free, meaning they do not contain harmful forever chemicals.

Yes. Reusable period underwear can save money over time compared to continually buying disposable products.

You can machine wash them with your regular laundry on a cool wash, up to 40°C/104°F. Avoid fabric softener and tumble drying to help maintain the leak-proof technology.

The Period & Leak Proof G-String Light are available in extended sizing; XS-4XL.

Overall rating: 5.0 / 5 from 24 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["feel","underwear","g string","leaks","boody"].

Review highlights

Reviews

Love these!

"These are so worth it. A local store to me sells the basic underwear so I already knew they were incredibly soft and comfortable, as well as high quality. But I needed light period underwear to use daily, but is still breathable and natural. This g-string is the only comfortable one I own. I got a pack of 5 of these and no regrets. They don't ride up anywhere there not supposed to go and they feel great on."

— Lara F. (5/5)

Love them

"Best g strings I have ever worn. So soft and super comfortable. I want to get more of them. Please make them in beige!!!"

— Sarah S. (5/5)

Best leak-proof underwear i ever tried

"Yeras and years of wearing boody underwear behind me. Love it. Getting older makes me need leak-proof thongs and I love the quality Boody provides."

— Ronald V. (5/5)

Comfort plus

"Comfortable and practical. Fabric is preferred over other alternatives. Does as is advertised and well constructed."

— Kirrily C. (5/5)

Comfy and supporting.

"Comfy and supporting."

— Veerle B. (5/5)

Great everyday underwear

"Will buy again."

— Maxine C. (5/5)

Super comfy

"Very happy with my purchase. Super comfy."

— Martina Z. (5/5)

Love these please add more colorways!

"My first Boody purchase and I'm really happy with these so I already ordered more. They are soft and comfortable and very absorbent. Useful for period days or at the gym. Please make more colorways!"

— Lily H. (5/5)

Great underwear

"I love Boody underwear! They fit just right, look great under my yoga pants & are SO comfortable!!"

— Alea B. (5/5)

Comfort and style!

"These are very comfortable!!!"

— G (5/5)

Q&A

On the Grid

Follow @boody