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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

£15.00GBP
Colour:
Size
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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 Standard Shipping on UK orders over £45.
  • Free Express Shipping on UK orders over £80.
  • Fast delivery, track your order easily. Learn more about shipping and delivery.
  • Easy returns process, hassle-free policy.
  • Returns accepted within 30 days of purchase.
  • Only unopened Intimates can be returned. Learn more about our returns policy.
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 single-layer 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 16 reviews.

AI Generated Review Summary

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Review highlights

Reviews

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)

Comfy period thong

"Comfiest period thong I've tried, they feel breathable and soft. Perfect for light days wearing leggings. Like all boody they take a long time to dry after washing"

— Sarah D. (5/5)

Best period underwear I’ve bought

"So much comfier than other brands, really happy with them"

— Catriona M. (5/5)

Need to buy more

"LOOVE these, most comfy period g strings I have bought"

— Erica S. (5/5)

Comfort

"Boody never disappoints"

— Kathleen C. (5/5)

10/10

"Absolutely wonderful! There are so many different period underwear on the market, but these are definitely the ones. They are soft, true to size and hold a lot more than I thought. I typically wear them as a backup for my cup and at the end of my period when I have a light flow. They absorb everything quickly and don't make me feel like I'm in a diaper. They have made having a period so much simpler and more eco friendly."

— TL (5/5)

better than a normal g-string!

"never thought i'd see the day where i would willingly wear a g string on my period but here we are. within minutes i'd completely forgotten i was wearing it. it was comfy all day and caught what it needed to catch. it doesn't feel like i am wearing a plastic bag."

— Andrea K. (5/5)

Amazing- Everything I didn’t know I needed

"I bought two pairs just to try it out after experiencing some light bladder leakage after my third baby and these are amazing! I wear them for training days and they help me feel comfortable. I now want to order more for everyday wear! You will not regret purchasing these."

— Tala (5/5)

The most comfortable G string

"Thes are absolutely gorgeous, so soft, stay in place all day."

— Julie L. (5/5)

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