Women’s Underwear

WOMEN'S UNDERWEAR SIA UNDERWEAR

We talk a lot about the clothes we wear — the dresses, the blazers, the shoes. We rarely talk about underwear. Yet it is the one thing we wear literally everywhere — at work and at home, in the heat of July and the cold of January, through busy days and quiet afternoons. Underwear is the first thing we put on in the morning and the last thing we take off at night. It touches our skin longer than any other garment.

When women's underwear is quality and comfortable, it stops being a problem. We don't think about it. We don't adjust it. We don't feel it as a concern. It is simply there — allowing us to focus on our day, on the people around us, on ourselves. Comfortable underwear knows no seasons. It doesn't care whether we're running for the bus or heading into a meeting. It follows our body — it doesn't restrict us, it doesn't remind us of itself at the wrong moment. It simply works.

That is why what we wear underneath matters — not just how it looks, but how it feels. At SIA Underwear we craft women's underwear from European materials, with attention to every detail. Underwear that doesn't need adjusting throughout the day. Women's underwear that makes us feel good — regardless of the season, the activity, or the mood.

Every woman has different needs when it comes to women's underwear — some look for everyday comfort, others for elegance on special occasions, others for functionality under specific clothes. In the SIA Underwear collection we create styles that cover all these needs. From classic cotton briefs for every day to lace sets for romantic evenings. From invisible microfibre underwear under fitted clothes to romantic lace lingerie sets for special moments.

TYPES OF WOMEN'S UNDERWEAR

Modern women's underwear offers a wide variety of styles for every need. At SIA Underwear we create bottoms, tops and functional underwear — every style designed with a specific purpose in mind. There is underwear for the office, for sport, for a romantic evening, for special outfits. Choosing the right style depends on what you will wear over it and how you want to feel throughout the day.

Bottoms

Briefs

The classic style with moderate coverage, suitable for every age. Briefs are the universal choice for women who want a balance between comfort and femininity. We offer briefs with low and high waistbands in various fabrics: cotton briefs for everyday wear, lace briefs for special occasions, microfibre briefs under fitted clothes and tulle briefs for summer. High-waist styles offer additional comfort and discretion, while low-waist styles work perfectly under jeans and low-rise trousers.

Brazilian briefs

The style that combines the comfort of briefs with the appeal of thongs. Brazilian briefs have a narrower back that accentuates curves without showing under clothes. A great choice for women who want feminine women's underwear with moderate coverage. We offer cotton Brazilian briefs, lace Brazilian briefs, microfibre and tulle Brazilian briefs.

Boxer shorts

Comfortable and practical, with maximum coverage. Women's boxer shorts are ideal for sport, loungewear or under wider clothing. They provide full comfort and protect against chafing between the thighs. Choose between cotton, lace and microfibre boxer shorts — an excellent choice for active women, during pregnancy, and for anyone who prefers maximum coverage without compromising on femininity.

Thongs

The minimalist choice for women who want their underwear to remain completely invisible. Thongs work perfectly under fitted trousers and dresses, under light-coloured clothes and anywhere standard underwear would show. Despite minimal coverage, quality thongs are surprisingly comfortable to wear all day long.

Tops and sets

Camisoles

An elegant top that can be worn on its own or as part of a set. Camisoles are ideal for women who don't wear a bra but want light support and coverage. We offer cotton, tulle and microfibre camisoles — a great choice for warmer months and for women who don't need structured support.

Crop tops

Short tops with light support that can be worn under sheer blouses or on their own. Crop tops combine the functionality of a vest with the femininity of a bra.

Women's underwear sets

Matching top and bottom in one design and colour. A well-coordinated set creates a sense of completeness and attention to detail. Women who wear sets share that they feel more confident and more feminine — even when nobody else sees their underwear. Sets are ideal as gifts, for anniversaries and for special occasions.

Garters

An accessory that adds a finishing touch to any set. We offer leg garters and bridal garters. Garters are more than just a functional element — they are a symbol of femininity and elegance.

Functional underwear

Shaping underwear

Styles with a smoothing effect that sculpt the silhouette and add confidence under fitted clothes. Shaping underwear works on the principle of light compression, which distributes tissue evenly and creates a smooth silhouette. It is not a corset and does not restrict movement — it simply shapes the body in a subtle way. Perfect under formal dresses, tailored suits and for special events.

Slips

Smooth slips for dresses and skirts that provide comfort and prevent show-through. Slips eliminate static, protect against transparency in fine fabrics and provide an extra layer between skin and outer garment. Essential under summer dresses and formal skirts.

Anti-chafing underwear

Specially designed shorts that protect the inner thighs from chafing during the warm months. Our anti-chafing shorts are made from breathable fabrics with a smooth texture that eliminates friction without creating discomfort. Women who try them once share that they transform their experience during the summer months.

FABRICS FOR WOMEN'S UNDERWEAR

Fabric choice is key to the comfort of women's underwear. Each fabric has its own unique characteristics that make it suitable for different needs and seasons.

Cotton — the most natural choice for everyday styles. Cotton is breathable, moisture-absorbent and hypoallergenic. We use cotton with elastane, which holds its shape after repeated washing and allows freedom of movement. Cotton women's underwear is ideal for women with sensitive skin, for summer and for all-day wear.

Polyamide (microfibre) — a high-quality fabric with exceptional softness and a silky feel. Women's underwear in polyamide fits like a second skin, dries quickly and is invisible under fitted clothes. Unlike polyester, polyamide is more durable and incomparably more pleasant against the skin. The smooth surface creates no visible lines under fitted dresses and trousers.

Lace — the symbol of beautiful styles. Lace styles are elegant and perfect for special moments. We use quality European lace that is soft and gentle on the skin. Lace adds visual refinement and turns everyday underwear into a small luxury — the essence of beautiful lingerie.

Tulle — a transparent, light and airy fabric. Tulle creates a sense of lightness and is ideal for summer. Polyamide-based tulle is elastic and durable. The open structure allows maximum ventilation while the elasticity ensures a good fit.

HOW TO CHOOSE WOMEN'S UNDERWEAR

Choosing the right women's underwear depends on several key factors — the occasion, the clothes you will be wearing, and your body shape. Each of these plays a role in how comfortable and confident you will feel throughout the day.

By occasion

For everyday wear we choose cotton briefs or Brazilian briefs — breathable, comfortable and suitable for long wear. Cotton provides freshness from morning to evening and is the best choice for working days, walks and daily activities.

For special occasions — lace or tulle lingerie styles that make us feel confident. Lace lingerie sets add a touch of luxury and femininity to romantic evenings, anniversaries or first dates. Choosing beautiful women's underwear is not just for others — it is a way of feeling special for ourselves.

For sport — cotton or microfibre boxer shorts. Boxer shorts provide maximum support during movement and protect against chafing. Cotton styles absorb moisture while microfibre styles dry quickly after an intense workout.

By outfit

Under light or fitted clothes we wear skin-tone microfibre underwear without elastic trims — it remains completely invisible. Skin tone blends with the body and does not show through white, beige or pastel fabrics.

Under dark clothes any colour works, but black remains the classic choice. It is practical to keep several pairs of black underwear in rotation for formal and everyday situations.

Under dresses and skirts we add a slip for a smooth silhouette. Slips eliminate static, prevent show-through in fine fabrics and provide comfort when moving.

By mood

The colour of women's underwear is not just a practical choice — it is an expression of how we feel that day. Black is a classic for every situation — elegant, versatile, never boring. White and skin tone are delicate and feminine. Red and burgundy add boldness and character. And prints — florals, geometric patterns, playful motifs — because underwear can also be a reason to smile.

We don't limit ourselves to neutral colours just because nobody sees them. We see them. And that is enough.

By size

The right size is the difference between women's underwear we forget we are wearing and underwear that reminds us of itself all day long. Too small pinches, leaves marks and creates visible lines under clothes. Too large shifts around and creates unwanted bulk.

We measure the waist and hip circumference with a soft tape measure and compare with the size guide. When in doubt between two sizes, we choose the larger. Cotton styles are less stretchy than microfibre — worth keeping in mind when selecting.

We offer women's underwear in sizes S to 6XL. If you cannot find your size, we make to individual measurements up to 10XL — see the details in Plus Size Underwear.

CARE FOR WOMEN'S UNDERWEAR

Proper care extends the life of women's underwear and preserves its qualities. Each fabric requires specific treatment to maintain its softness, elasticity and colour over time.

Washing — we recommend hand washing in cool water up to 30°C with a delicate detergent. For machine washing use a mesh laundry bag and a delicate cycle. Avoid bleach and harsh detergents — they break down elastic fibres. Cotton styles can withstand 40°C, but lower temperatures are always safer.

Drying — leave women's underwear to dry naturally, away from direct sunlight. Do not use a tumble dryer — high heat distorts the fabric and damages the elastane. Do not wring forcefully — allow the water to drain naturally.

Storage — store women's underwear in a separate drawer without compressing it. Arrange lace styles carefully to avoid snagging on other garments. With proper storage, underwear holds its shape for longer.

Fabric-specific care — lace and tulle styles require the most delicate treatment. Always wash them in a bag or by hand. Microfibre styles handle machine washing well. For all fabrics, avoid high-speed spin cycles.

FREQUENTLY ASKED QUESTIONS

How do I choose the right size women's underwear? Measure your waist and hip circumference and compare with the size guide. When in doubt, choose the larger size. Cotton styles are less stretchy than microfibre — with cotton it is safer to go up a size if you are between two.

Which women's underwear is best for everyday wear? Briefs or Brazilian briefs in stretch cotton — breathable, comfortable and suitable for extended wear. But nothing stops us choosing lace underwear for every day — beauty is not reserved for special occasions.

What women's underwear should I wear under fitted clothes? Brazilian briefs or thongs in microfibre in a skin tone. The smooth fabric without elastic trims remains invisible under fitted trousers, dresses and skirts. For maximum invisibility, choose seamless styles.

What is anti-chafing underwear? Functional styles that protect the inner thighs from chafing and irritation. Anti-chafing shorts are made from breathable fabrics with a smooth texture that eliminates friction. Women who try them share that they transform their experience during the warm months.

What women's underwear makes a good gift? A lace or microfibre set in a classic colour — black, burgundy or champagne. Lace styles are perfect for romantic occasions, while microfibre styles are more versatile for everyday wear.

Can I order women's underwear in my size? Yes, we make to individual measurements up to 10XL. Contact us for details.

Do you offer bridal underwear? Yes, we have a dedicated bridal underwear category with styles for brides and bridal garters in white and champagne in lace and tulle.

How do I choose between cotton and microfibre? Cotton — if you want a natural fabric and maximum ventilation. Microfibre — if you want a smooth silhouette under fitted clothes. The choice depends on your priorities.

UNDERWEAR THAT LOVES US BACK

The right women's underwear is not a matter of chance. It is the result of a good choice — of style, of fabric, of size. When everything is right, underwear disappears from our awareness and lets us live our day freely. We don't adjust it, we don't think about it, we don't feel it as a discomfort. It is simply there — doing its job quietly.

Women's underwear is also a matter of caring for ourselves. We don't need to wait for a special occasion to choose comfortable women's underwear. We don't need to settle for a style we don't love just because it is practical. Comfortable and beautiful are not opposites — they exist together when we choose thoughtfully.

At SIA Underwear we craft women's underwear with this freedom and pleasure in mind. Browse the collection and find the styles created for you.

WOMEN'S UNDERWEAR SIA UNDERWEAR

TYPES OF WOMEN'S UNDERWEAR

FABRICS FOR WOMEN'S UNDERWEAR

HOW TO CHOOSE WOMEN'S UNDERWEAR

CARE FOR WOMEN'S UNDERWEAR

FREQUENTLY ASKED QUESTIONS

UNDERWEAR THAT LOVES US BACK