Light Flow Seamless Period Thong

Name: Light Flow Seamless Period Thong
Rating: 4.88 (17 reviews)

$18.95 USD

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Absorbs up to half a pad or half a tampon

PFAS-free, four-layer protection

Free first-size exchange

Not sure this absorbency is right for you? Find your match →

Color Black Apricot

Size XS S M L XL 2XL 3XL 4XL

Runs small — we recommend one size up from your usual size.

Barely-There Feel. Discreet Protection.

Light-flow protection can still look sleek, feel feminine and disappear beneath your clothes.

The EvaBody Light Flow Seamless Period Thong combines a smooth, flexible finish with a low-rise thong silhouette for minimal coverage and a barely-there feel. Designed to sit discreetly beneath fitted clothing, it helps reduce visible lines while feeling soft and comfortable against the body.

Ideal for lighter period days, spotting or backup protection, it provides just the right level of absorbency when you want added confidence without the fuller coverage of traditional period underwear. Wear it under dresses, activewear, workwear or your favourite fitted outfits when discretion matters most.

It can also be worn for daily discharge or as an extra layer of reassurance alongside another period product.

Product Features

Absorbency: Holds up to half a pad or half a tampon

Best for: Light flow, spotting and backup protection

Style: Thong

Low-rise fit for a sleek, minimal feel

Minimal back coverage for a barely-there look

Smooth finish for all-day comfort

Designed to sit discreetly under close-fitting clothing

Material Composition

Body: 78% Nylon, 22% Spandex
Lining: 95% Cotton, 5% Elastane
Middle: 80% Polyester, 20% Nylon

Sizing

Our styles run small, so we recommend sizing up from your normal size for the best fit.

Not sure which size to choose? View our full Size Guide →

Still unsure? Don't stress, we offer a free first size exchange if your first EvaBody order isn't quite the right fit.

Our styles run small, so we recommend sizing up from your normal size for the best fit.

Not sure which size to choose? View our full Size Guide →

Still unsure? Don't stress, we offer a free first size exchange if your first EvaBody order isn't quite the right fit.

Size Chart

← Swipe sideways to view all sizes →

XS	S	M	L	XL	2XL	3XL	4XL	5XL	6XL
50–55	55–60	61–65	66–70	71–76	73–78	79–85	86–90	91–96	97–102
19.7–21.7	21.7–23.6	24.0–25.6	26.0–27.6	28.0–29.9	28.7–30.7	31.1–33.5	33.9–35.4	35.8–37.8	38.2–40.2
90–95	95–98	99–103	104–108	109–113	114–120	121–127	128–133	134–138	139–143
35.4–37.4	37.4–38.6	39.0–40.6	40.9–42.5	42.9–44.5	44.9–47.2	47.6–50.0	50.4–52.4	52.8–54.3	54.7–56.3
XXS	XS	S	M	L	XL	2XL	3XL	4XL	5XL
0	2	4	6	8	10	12	14	16	18
32	34	36	38	40	42	44	46	48	50
32	34	36	38	40	42	44	46	48	50
4	4–6	6–8	8–10	10–12	12–14	14–16	16–18	18–20	20–22
4	6	8	10	12	14	16	18	20	22
38	40	42	44	46	48	50	52	54	56
36	38	40	42	44	46	48	50	52	54

How Our Protection Works

Four Layers. One Smart Protection System.

EvaBody’s four-layer technology wicks away moisture, absorbs fluid and helps prevent leaks, while the soft outer fabric keeps you comfortable and confident throughout the day.

Explore our four-layer technology →

First Order Size Guarantee

Shopping for period underwear for the first time? We've got you covered.

If your first EvaBody order isn't the right fit, we'll send you one replacement in the correct size at no extra cost, and you can keep your original pair.

Simply contact us within 14 days of delivery.

PFAS-Free Guarantee

Every EvaBody period underwear style is independently tested and confirmed PFAS-free and is made with OEKO-TEX® STANDARD 100 certified fabrics, ensuring it is free from harmful levels of over 1,000 substances.

Care Instructions

To keep your EvaBody pieces performing at their best:

Before first wear

Machine wash on a cold or gentle cycle at a maximum of 30°C using mild detergent, then air dry completely. This helps prepare the absorbent layers for use.

After each use

Rinse in cold water until the water runs mostly clear.
Machine wash with similar colours on a cold or gentle cycle at a maximum of 30°C using mild detergent.
Do not use bleach or fabric softener.
Air dry completely in a well-ventilated area. Do not tumble dry.
Do not iron.

Read the full care guide →

No Harsh Chemicals
Easy Returns
Worldwide Shipping

View full details

Size Guide

Our styles run small, so we recommend sizing up from your normal size for the best fit.

Not sure which size to choose? View our full Size Guide →

Still unsure? Don't stress, we offer a free first size exchange if your first EvaBody order isn't quite the right fit.

Size Chart

← Swipe sideways to view all sizes →

XS	S	M	L	XL	2XL	3XL	4XL	5XL	6XL
50–55	55–60	61–65	66–70	71–76	73–78	79–85	86–90	91–96	97–102
19.7–21.7	21.7–23.6	24.0–25.6	26.0–27.6	28.0–29.9	28.7–30.7	31.1–33.5	33.9–35.4	35.8–37.8	38.2–40.2
90–95	95–98	99–103	104–108	109–113	114–120	121–127	128–133	134–138	139–143
35.4–37.4	37.4–38.6	39.0–40.6	40.9–42.5	42.9–44.5	44.9–47.2	47.6–50.0	50.4–52.4	52.8–54.3	54.7–56.3
XXS	XS	S	M	L	XL	2XL	3XL	4XL	5XL
0	2	4	6	8	10	12	14	16	18
32	34	36	38	40	42	44	46	48	50
32	34	36	38	40	42	44	46	48	50
4	4–6	6–8	8–10	10–12	12–14	14–16	16–18	18–20	20–22
4	6	8	10	12	14	16	18	20	22
38	40	42	44	46	48	50	52	54	56
36	38	40	42	44	46	48	50	52	54

5 stars: 15 (88%)
4 stars: 2 (12%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

Perfect for the final days of my period

I love wearing these toward the end of my period when my flow is really light. They feel just like a normal thong and give me enough protection without needing to wear a liner. So comfortable and discreet under clothes.

Great backup protection

I use these as backup when I am expecting my period or when I am not sure if it has completely finished. They give me peace of mind without feeling like traditional period underwear. I will definitely be ordering another pair.

Finally, period underwear that works with leggings

These are smooth, lightweight and barely noticeable under fitted clothing. I wore them with leggings and could not see any obvious underwear lines. Perfect for spotting and those unpredictable in-between days.

Cute, practical and actually discreet

This is such a practical addition to my underwear drawer. It looks and feels like regular underwear but provides that little bit of extra protection when I need it. Just keep in mind that it is designed for light flow rather than heavier days.

Comfortable without feeling bulky

I was worried the absorbent section would feel thick, but it does not feel bulky at all. The fabric is soft and the thong stays comfortable throughout the day. I sized up as recommended and the fit was perfect.

Simple, comfortable and discreet

Lightweight, comfortable and practical. It gives me peace of mind without feeling bulky at all.

A staple in my underwear drawer

I reach for this pair all the time now. It's perfect for those in-between days when a pad feels unnecessary.

Finally found a thong that feels secure

I've tried other period thongs before and this one feels the most secure and comfortable by far.

Good for what it's made for

It does exactly what it says. Great for spotting and light discharge, I just wish there were more colours available.

Such a practical style

I didn't realise how useful a light-flow thong would be until I tried this. Such a smart product.

Ideal for the end of my cycle

This has become my go-to for the end of my cycle when I just need a little bit of protection.

No visible lines at all

I wore this under a bodycon dress and there were absolutely no visible lines. So happy I found this style.

I forget I'm wearing it

The fabric is so soft and the thong cut feels completely natural. I honestly forget it's period underwear.

Comfortable but best for very light flow

Really comfortable and nicely made. I just wouldn't use it for anything more than very light flow personally.

The perfect backup option

I mainly use this as backup protection and it's exactly what I was looking for. Comfortable and discreet.

Great under leggings

I bought this to wear under activewear and fitted leggings. It works really well, although I'd only use it for very light days.

Exactly what I need for spotting days

This has been perfect for spotting and those last couple of days of my period. I barely notice I'm wearing it.

Country/region

Light Flow Seamless Period Thong