One-piece
The one-piece fit covers the tummy and is worn like a regular swimsuit.
Thea | Period Swimsuit | Teens | Black
Thea | Period Swimsuit | Teens | Black
Moderate · up to 30 ml
Regular price
€49,99
Sale price
€49,99
Regular price
€49,99
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Description
About the Thea period swimsuit
Thea – Menstrual swimsuit that gives young women confidence, from Femi.Eko®
Specially designed for teenagers, Thea is a modern and discreet menstrual swimsuit that provides real protection during menstruation. Ideal for the first period, camping trips, beach holidays or swimming lessons - Thea helps you enjoy the water without worries.
Why choose Thea?
🌊 Safe and invisible protection – Absorbs up to 3 tampons and is ideal for moderate flow or as extra protection with a menstrual cup or disc. Protects you for up to 12 hours, even when you are active.
🩱 Made for teen comfort – Lightweight and supportive fit without being tight. Leaves no marks, doesn't bother, and is designed to make you feel comfortable in your own body.
💧 Certified and water-repellent materials – With a waterproof outer layer and breathable inner layer, Thea is made of OEKO-TEX® certified materials that are gentle on the skin and resistant to chlorine and sun.
♻️ Sustainable and recyclable – An eco-friendly choice that fits a conscious lifestyle from the first encounter with menstrual products.
How can it be used?
📅 Perfect for the pool, beach, camping trips or swimming lessons - the Thea menstrual swimsuit is your ally for all water activities, without stress and without compromise.
👩🎓 For teenagers who are at the beginning of their journey – Provides confidence, discretion and freedom, even on the most sensitive days of the month.
Why Femieko
More than a swimsuit.
Thea is a period swimsuit for teens with built-in protection and a discreet look.
Discreet protection
The absorbent area is integrated on the inside, so you can feel at ease by the pool or on the beach.
Freedom of movement
The stretchy material follows your body's movements, from swimming lessons to playing in the water.
Your swimming plans carry on.
For the days when you want to get in the water and enjoy time with your friends.
30 ml
Absorbency
The stated capacity for Thea. When you need to change depends on how heavy your flow is.
Moderate
Absorbency level
Can be worn on its own on light or moderate flow days. On heavy flow days, add internal period protection.
Pool and sea
Designed for swimming
For swimming lessons, camps and beach holidays.
Femi.Eko technology
How Thea is made.
Three layers in the absorbent area, complemented by the outer fabric.
Tap a layer. Explore it.
100% polyester. Forms the innermost surface against the skin, on top of the absorbent layer.
80% polyester and 20% nylon. Takes in and holds menstrual blood in the swimsuit's absorbent area.
Waterproof and breathable TPU membrane. Complements the absorbent layer and helps limit fluid from leaking out.
82% nylon and 18% elastane. The stretchy fabric forms the outside of the swimsuit and gives freedom of movement in the water.
A look insideAutomatic presentation · 24 seconds
Tap or select a layer to see what it does.
The illustration shows the swimsuit's absorbent area schematically.
Is Thea right for you?
Moderate
Up to 30 mlLight · Moderate
Cut
One-piece swimsuit with thin straps
Coverage
Gusset protection extended at the backDay
The first periods
A familiar solutionIf you prefer external protection, you put Thea on like a regular swimsuit.
Your preference
You like one-piece swimsuitsA choice if you feel more at ease with your tummy covered and a one-piece fit.
Your plans
Swimming and holidaysFor teens who go to the pool, to camp or to the beach and want a reusable solution.
TeensModerate flowLight flowBeach / poolSwimming
DETAILS THAT MATTER
Materials ready for water and sun.
OEKO-TEX STANDARD 100
Materials tested for harmful substances according to the certification criteria.
UV30+ protection
The fabric provides UV protection on the area it covers. Use sunscreen on exposed skin.
Chlorine-resistant
Material developed for use in swimming pools, with care according to the instructions.
Quick-drying
Quick-drying fabric. Also let the absorbent area dry completely before wearing it again.
How to use them
Easy, before and after swimming.
Choose a step to see what to do.
Illustrations show the product and routine schematically.
-
The swimsuit should sit close to the body. Straps and edges should be comfortable, without large gaps.
-
Rinse them in cold water after use, before washing them.
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Wash at 30°C, without fabric softener.
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Let the swimsuit air-dry completely, then wear it again.
Transparent comparison
What extra does Thea give you?
A swimsuit in which you can also reuse your period protection.
Criterion
FemiekoThea | Period Swimsuit | Teens | Black
Swimsuitregular
Swimsuitregular + tampon
Built-in protection
Swimsuit and protection in oneThe absorbent area is part of the swimsuit. There's no separate product to attach to the fabric.
Swimwear onlyHas no area designed to absorb menstrual blood.
Two productsYou wear the swimsuit and use a tampon separately for absorbency.
Materials
Layers with different functionsThe absorbent layer holds the flow, and the TPU membrane adds a barrier towards the outside.
Swim fabricRegular swimwear fabric is not designed to hold menstrual blood.
Absorbency in the tamponThe tampon absorbs the flow inside the body. A regular swimsuit doesn't provide absorbent period protection.
Use
An external alternativeWith a light or moderate flow, you can swim in Thea without inserting a period product into your body.
Protection chosen separatelyDuring your period you also need a solution that is suitable for water.
Inserted into the bodyThe tampon is inserted and changed according to its instructions.
Reuse
You reuse the protection tooAfter washing and drying completely, the swimsuit and the absorbent area are ready to be used again.
You reuse the swimsuitPeriod protection is chosen and handled separately.
New tampon at every changeThe swimsuit is reused, and the tampon is thrown away after use.
Products used up
Fewer tampons to buyWhen Thea alone gives you the protection you need, you replace the tampons you'd otherwise use for swimming.
Depends on the protection chosenConsumption depends on the period product you use with the swimsuit.
Needs restockingYou need new tampons for changes along the way.
Thea can be used on its own for a light or moderate flow. For a heavy flow, use additional internal protection. The features of other products vary from model to model.
Size guide
Find the right size for Thea
| Size (EU) | Bust (cm) | ||
|---|---|---|---|
| 3XS (30) | 63–68 | 49–54 | 63–68 |
| 2XS (32) | 67–72 | 53–58 | 67–72 |
| XS (34) | 71–76 | 57–62 | 71–76 |
| S (36) | 75–80 | 61–66 | 75–80 |
| M (38) | 79–84 | 65–70 | 79–84 |
| L (40) | 83–88 | 69–74 | 83–88 |
Measure your natural waist at its narrowest point. Keep the tape horizontal without tightening it.
Measure around the fullest part of your hips and buttocks. Keep the tape horizontal.
Measure hips, waist and bust
Your hips are the first reference point when choosing a size. Also check waist, bust and the fit along the length of your torso. The swimsuit should sit close to the body without pulling on the straps or squeezing at the legs.
Customer reviews
What our customers say
Frequently asked questions
Questions about the Thea period swimsuit
Is Thea suitable from the first periods?
Yes. Thea is designed for teens, including those having their first periods. It's worn like a regular swimsuit, with built-in period protection. Choose it based on measurements and flow, not just age.
Can I swim in Thea without a tampon?
Yes, on light or moderate flow days you can wear it on its own. For a heavy flow, you can combine it with an internal period product that suits you, e.g. a tampon, a cup or a disc. If you haven't used such a product before, read the instructions before use.
How long can I wear it in the water?
How long you can wear it depends on how heavy your flow is. A capacity of 30 ml doesn't equal a fixed number of hours. The first few times, check more often whether you need to change, and bring an extra swimsuit, especially for a long day at the beach.
How do I choose the right size?
Check Thea's size guide, and compare your hips, waist and bust with the ranges in the chart. The swimsuit should sit close to the body without pulling on the straps or leaving big gaps at the legs. Don't choose a smaller size to increase absorbency.
Can people tell it's a period swimsuit?
Thea looks like a one-piece with thin straps. The absorbent layers sit on the inside, in the gusset, and are discreetly integrated into the fit.
Can adult women wear it too?
Thea is mainly made for teens, but adult women can also wear it if the fit suits them. Check the size chart and how the swimsuit fits over the bust and along the length of the torso.
How do I care for it after the pool or the sea?
Rinse the swimsuit in cold water, then wash it at 30°C without fabric softener. Air-dry it away from strong sunlight, without a tumble dryer. Follow the label, and let the absorbent area dry completely before using it again.
What should I bring for a day at the pool?
Pack an extra swimsuit, dry underwear and a waterproof bag for the used swimsuit. When you get home, take it out of the bag, rinse it and wash it. If you swim several days in a row, also allow for drying time.
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