Stylish one-piece swimsuit for the sun: UV protection

Three years ago, my client Lena called me from the Maldives in tears. Instead of romantic dinners by the ocean, she was spending her long-awaited honeymoon in an air-conditioned room—a severe sunburn on the very first day turned her vacation into a nightmare. When we were putting together a capsule wardrobe for her next trip to Dubai, she categorically refused to wear a bikini. It was then that I first put together a wardrobe for her where the main character was one-piece swimsuit Since then, she never returned to open models.

In the minds of many women, fully-covering swimwear is still associated with either professional surfing or strict religious norms. However, today this is a profound misconception. We've covered the evolution of this wardrobe item in more detail in our The complete guide to burkinis , but today I want to talk about something else: how the covered body has become the pinnacle of modern resort luxury aesthetics.

The one-piece swimsuit symbolizes the new beach luxury.

Over the past 12 years as a personal stylist, I've noticed a radical shift. While women used to ask for "the tiniest bikini possible, so there won't be any strap marks," over the past two seasons, every third client has specifically requested a full-length, long-sleeved bikini in their travel suitcase. And it's not just a matter of modesty.

According to official data from The Skin Cancer Foundation, regular use of sunscreen doesn't always protect against photoaging and health risks, especially if you forget to reapply after every swim. Fabric, on the other hand, provides continuous, non-washable protection.

"The fashion for nudity is becoming a thing of the past. Modern luxury is about taking care of yourself. A woman in an elegant swimsuit with perfect posture looks much more prestigious than one frantically hiding under an umbrella from the scorching sun." This observation from my experience is confirmed by the collections of recent years.

Luxury fashion houses and conceptual brands like Cynthia Rowley, Lanuuk, and Marysia have made one-piece swimsuits an object of desire. It's no longer a "necessary measure," but a conscious choice for successful women who want to preserve youthful skin while looking as if they just stepped off the deck of a yacht on the French Riviera.

The Heat Myth: How UPF 50+ Fabrics Protect You from the Heat

"Isabella, I'll be fried in this suit!" is the first reaction I hear when I suggest a rash guard or a long-sleeved one-piece swimsuit for a trip to the Emirates or Thailand. Let's explore this counterintuitive point.

The myth is: more fabric means more sweat. Fact: high-tech fabrics cool your body better than bare skin exposed to direct rays. This is the effect of Bedouin robes, adapted for modern sportswear. Direct infrared heats bare skin instantly, while the right fabric absorbs the heat.

But there is a major limitation here. This does NOT work If you buy a cheap, mass-market one made of ordinary, non-breathable polyester for €15, that swimsuit will truly turn into a greenhouse.

A real one-piece sun protection swimsuit works differently:

• UPF (Ultraviolet Protection Factor) rating: Unlike cosmetics (SPF), which only protect against UVB rays (which cause sunburn), a UPF rating of 50+ blocks 98% of both UVA and UVB rays. For comparison, your favorite summer white cotton T-shirt has a UPF rating of only about 5, meaning it lets through 20% of harmful radiation.
• Thermoregulation: Premium brands use microfibers that instantly wick moisture away from the body. When a light breeze touches damp fabric, a micro-cooling effect occurs.

Types of one-piece swimsuits: from rashguards to swim dresses

Today's modest swimwear market offers solutions for every type of vacation. Forget shapeless wetsuits—today's cuts flatter your figure even when fully covered.

Sporty Chic: Surf Aesthetics and Rashguards

If your vacation includes SUP boarding, kitesurfing, or active beach activities, choose sets of crop rashguards and swim leggings (or shorts). A distinctive feature of these styles is a thick front zipper. This allows you to control the depth of the cut: zip it up to the chin while swimming, then unzip it on the beach for a casual look.

Elegant classics: one-piece models with long sleeves

My favorite option for relaxing by the pool. Visually, these swimsuits resemble luxurious evening bodysuits. Brands often add accent belts at the waist to accentuate the silhouette, or feature a deep back, covered with a sheer mesh.

New Generation Burkinis: Fabric Architecture

Brands like Lyra Swimwear have completely reimagined the burkini concept. Today, they feature sophisticated layered sets consisting of asymmetrical tunics and loose palazzo pants. The key innovation lies in the details: hidden loops and fasteners connect the tunic to the pants, preventing the fabric from riding up while swimming.

How to Choose the Perfect One-Piece Sunsuit: A Cut Guide

Buying a sunscreen swimsuit is an investment. A quality set from a trusted brand typically ranges from €100–€350. To ensure every cent is worth the investment, check it against my personal checklist before purchasing.

1. Look for fiber markings: A high-quality swimsuit is made from high-tech materials. Ideally, the tag should indicate the use eco-friendly fabrics , such as ECONYL® (regenerated nylon from ocean-caught nets) or Xtra Life LYCRA® (a material that lasts 10 times longer than regular elastane when exposed to bleach).
2. Check the seams: A one-piece swimsuit should fit snugly against the body. Make sure the seams are flatlock—convex seams will inevitably chafe damp skin under the arms or on the inner thighs.
3. UPF Certificate: The words "sun protection" mean nothing unless there is a specific UPF 50+ number next to it.

Stylist advice for your body type: If you're choosing a fully covered style (such as a rashguard and leggings), try to avoid solid black from top to bottom—it can visually weigh down the silhouette, making it look monolithic. Use color blocking: dark bottoms to slim down the hips and an accent, light, or printed top to draw attention to the face.

Style Formulas: How to Wear a One-Sided Swimsuit Outside the Beach

The main superpower of a one-piece swimsuit, which is why my clients adore it, is its absolute versatility. You no longer have to return to your room to change before dinner.

Here are three surefire formulas that work without fail:

• For lunch on the waterfront: A long-sleeved one-piece swimsuit + wide-leg silk or linen palazzo pants + a straw boater hat + chunky sunglasses = an Old Hollywood look.
• For a tour of the hot city: Crop rashguard + high-waist linen midi skirt + flat sandals + woven tote bag.
• For an evening cocktail: Swim dress + large pearls (about that, How to wear pearls in a modern way , we wrote earlier) + sandals with thin straps.

By the way, to avoid taking unnecessary things on vacation, I recommend my clients to use MioLook Simply upload a photo of your swimsuit, and the AI assistant will create ready-made capsules for you featuring your skirts and shorts. This saves space in your suitcase and reduces stress during packing.

Caring for sunscreen fabrics: how to avoid washing off UPF protection

I've seen clients slay luxurious €250 swim dresses on their very first vacation. UPF protection in high-quality fabrics is achieved through the tight weave of the fibers (in cheaper fabrics, it's achieved through chemical impregnation). If the weave is compromised, UV rays begin to penetrate the fabric.

Remember fresh water rule As soon as you get out of the ocean or pool, shower immediately in your swimsuit. Salt and chlorine are elastane's main enemies; they break down the fibers within a few hours, making the fabric loose.

• No hot water: Wash only in cool water (not exceeding 30°C).
• Taboo on aggressive powders and conditioners: Fabric softeners leave a film on the fabric that completely destroys the moisture-wicking properties (the cooling effect will disappear).
• Drying in the shade: Never wring out your swimsuit or dry it in direct sunlight or on a radiator.

With proper care, a good one-piece swimsuit will last you 2-3 seasons of active recreation. If the fabric begins to sag, loses its elasticity, or feels thinner, the UPF protection has decreased, and it's time to replace it.

Style no longer requires sacrifice, and safety doesn't have to be boring. By choosing a high-tech one-piece swimsuit, you get ultimate comfort, a flawless silhouette, and luxurious, spot-free skin. Invest in the right fabrics, incorporate beach bodysuits into your everyday looks, and enjoy the sun without fear.