Choosing swimwear for an outdoor beach or pool day is not only about colour, coverage and fit. The fabric’s level of ultraviolet protection can also be an important consideration, especially when spending extended time outside.
You may have seen UPF 50+ swimwear mentioned in product descriptions without knowing exactly what the rating means or how it differs from the SPF number on sunscreen.
This guide explains how UPF fabric protection works, which areas it covers and why it should be used as part of a wider sun-protection routine.
What Does UPF Mean?
UPF stands for Ultraviolet Protection Factor.
It is a rating used for fabrics and clothing to indicate how much ultraviolet radiation can pass through the material and reach the skin underneath.
Unlike ordinary coverage alone, a confirmed UPF rating gives more specific information about the fabric’s tested level of protection.
The higher the UPF number, the smaller the amount of ultraviolet radiation that passes through the material.
For example, a fabric rated UPF 50 allows approximately one-fiftieth—or 2%—of ultraviolet radiation to pass through, meaning it blocks approximately 98%. The rating considers both UVA and UVB radiation.
What Does the Plus Sign in UPF 50+ Mean?
UPF ratings are commonly displayed as a number, such as UPF 30 or UPF 50.
When a fabric is labelled UPF 50+, it indicates that its protection meets or exceeds the highest commonly displayed UPF classification.
The rating applies to the fabric and the areas covered by it. It does not mean that the entire body is protected while wearing one UPF-rated item.
Any areas left exposed—such as the face, hands, feet or part of the neck—still require their own appropriate sun protection.
What Is the Difference Between UPF and SPF?
UPF and SPF both relate to ultraviolet protection, but they apply to different products.
UPF is used for fabrics and clothing. It indicates how much UVA and UVB radiation can pass through the material.
SPF, or Sun Protection Factor, is used for sunscreen. The SPF number primarily describes protection from UVB radiation, while products labelled broad spectrum are designed to protect against both UVA and UVB.
A simple way to remember the difference is:
- UPF relates to what you wear.
- SPF relates to what you apply to exposed skin.
One does not replace the other.
Why Does UPF Matter in Swimwear?
Swimwear is often worn during long periods outdoors, including at:
- Beaches
- Outdoor pools
- Chalets
- Water parks
- Boat trips
- Resorts
- Outdoor swimming lessons
Water and light-coloured surfaces can reflect ultraviolet radiation, so sun protection remains important even when you are sitting under partial shade or moving in and out of the water.
UPF-rated swimwear provides a consistent physical barrier over the areas it covers. Unlike sunscreen, fabric does not need to be reapplied every two hours over the covered areas.
However, the garment must remain in place and continue covering the intended skin. Sleeves that rise or tops that shift may leave areas unexpectedly exposed.
Why UPF Matters in Modest Swimwear
Modest swimwear often covers more of the body than conventional swimsuits.
Depending on the design, it may include:
- Long sleeves
- A longer swim top
- Full-length pants
- Coverage around the hips
- A swimming head cover
- Coverage around parts of the neck
When these pieces are made from confirmed UPF-rated fabric, they can provide sun protection across a larger covered area.
This can be particularly useful during outdoor swimming and resort days across the GCC and other warm parts of the Arab region.
However, more coverage does not automatically mean a confirmed UPF rating. Always check the product description rather than assuming that every long-sleeve swimsuit or burkini provides the same tested protection.
Learn more about the available coverage levels in our complete guide to modest swimwear in Kuwait.
Does Every Fabric Protect Against the Sun?
Most clothing creates some physical barrier between the skin and sunlight, but the amount of ultraviolet protection can vary significantly.
The effectiveness of a fabric can be affected by:
- How tightly it is woven or knitted
- Fibre type
- Fabric thickness
- Colour
- Construction
- How much it is stretched
- Whether it is wet or dry
- Wear and deterioration over time
The World Health Organization notes that clothing that is overstretched, wet or worn out may lose some of its protective properties. This is one reason a verified UPF rating is more useful than judging protection only by how covered a garment looks.
Can Swimwear Lose Protection When Wet?
Some ordinary fabrics can provide less ultraviolet protection when wet, stretched or worn down.
Swimwear is specifically intended to be worn in water, but you should still rely on the information supplied for the individual product rather than assuming every swim fabric performs identically.
Choosing the correct size is also important. A garment that is significantly too small may overstretch the fabric and change how it sits over the body.
Follow the size chart and choose a fit that allows comfortable movement without placing unnecessary tension on the material.
Fabric protection is only one consideration. Read our guide to choosing modest swimwear for hot weather for more advice on quick-drying fabrics, fit and comfort.
Does Dark Swimwear Offer Better Protection?
Darker colours often block more ultraviolet radiation than lighter colours when comparing otherwise similar fabrics. However, colour alone does not confirm a garment’s UPF rating.
A lighter fabric can still provide high tested protection depending on its fibres, structure, layers and manufacturing treatment.
This means you do not have to choose only black or very dark swimwear. Instead, look for a clearly stated UPF rating for the specific garment.
For pale or off-white swimwear, also check whether selected areas are lined or double-layered to provide the intended opacity when wet.
Which Areas Does UPF Swimwear Protect?
UPF swimwear protects the skin directly covered by the rated fabric.
For a full-coverage burkini, this may include:
- Arms
- Shoulders
- Torso
- Back
- Hips
- Legs
A swim hijab or hat may provide additional physical coverage for the hair, head or neck, but only claim UPF protection for it when the product itself is confirmed as UPF rated.
Areas commonly left exposed may include:
- Face
- Hands
- Feet
- Ankles
- Parts of the neck
- The area around the swimsuit neckline
These exposed areas should be considered separately.
Does UPF 50+ Swimwear Replace Sunscreen?
No.
UPF fabric helps protect the skin underneath the covered garment. Sunscreen is still required on exposed skin.
The World Health Organization recommends combining protective clothing with shade and broad-spectrum sunscreen on areas that cannot be covered. The FDA also advises reapplying sunscreen at least every two hours and more often after swimming or sweating, according to the product instructions.
No sunscreen blocks all ultraviolet radiation, and sun-protective clothing should not be used as a reason to remain outside longer than you otherwise would.
A wider sun-protection routine may include:
- Seeking shade
- Avoiding unnecessary exposure around the middle of the day
- Wearing UPF-rated clothing
- Applying broad-spectrum sunscreen to exposed skin
- Wearing suitable sunglasses
- Using a hat when appropriate
- Checking the UV Index before outdoor activities
The World Health Organization recommends sun protection measures when the UV Index reaches 3 or above.
Is UPF 50+ Only Important in Summer?
Ultraviolet radiation is not determined only by how hot the weather feels.
A cooler or cloudy day can still involve ultraviolet exposure. The UV Index is a more useful guide than temperature alone because it measures the level of ultraviolet radiation and the potential for skin and eye damage.
UPF swimwear can therefore remain relevant during:
- Spring beach days
- Outdoor pools
- Winter resort travel
- Boat trips
- Cloudy outdoor swimming days
- Holidays in warm destinations
Check the local UV Index rather than relying only on the season or temperature.
What to Check Before Buying UPF Swimwear
Before ordering, review whether the product page clearly states:
- The confirmed UPF rating
- Which pieces in the set use the rated fabric
- The full set contents
- Sleeve and pant length
- The recommended size
- Care instructions
- Whether the style is designed for swimming
- Any separate information about the swim hijab or head covering
Avoid relying on vague phrases such as “sun safe” or “protective” when no specific rating is provided.
A clear product description should distinguish tested UPF protection from ordinary fabric coverage.
How to Care for UPF Swimwear
Good care helps maintain the fabric’s shape, coverage and performance.
After swimming:
- Rinse the garment promptly in clean, cold water
- Follow the product’s washing instructions
- Avoid bleach and harsh cleaning products
- Do not iron the swimwear
- Avoid excessive stretching or twisting
- Allow it to air dry away from strong direct heat
- Avoid rough surfaces that may damage the fabric
- Do not leave it wet inside a closed bag
Replace swimwear when the material becomes visibly thin, damaged, overstretched or unable to return to its original shape.
UPF 50+ Modest Swimwear from MAYOO MENA
Selected MAYOO MENA swimwear is made using UPF 50+ fabric alongside practical performance features designed for swimming and warm-weather use.
The collection includes different coverage options such as:
- Full-coverage burkinis
- Long-sleeve swim tops
- Straight-leg swim pants
- Swim leggings
- Short-sleeve swimsuit-and-skort sets
- Two-piece and three-piece swim sets
Selected designs also include quick-drying and breathable fabric, longer relaxed tops, concealed ankle drawcords and adjustable attachments between the top and pants.
These features allow women to choose their preferred coverage while considering movement, comfort and outdoor sun exposure.
Explore UPF 50+ modest swimwear from MAYOO MENA.
Frequently Asked Questions
What does UPF 50+ mean in swimwear?
It means the fabric allows approximately 2% of ultraviolet radiation to pass through and blocks approximately 98%, when used according to its tested rating.
Is UPF 50+ the same as SPF 50?
No. UPF is a fabric rating, while SPF is used for sunscreen. UPF considers ultraviolet radiation passing through clothing, while the SPF number primarily relates to protection from UVB radiation.
Do I still need sunscreen with a UPF burkini?
Yes. Apply appropriate sunscreen to any exposed areas, including the face, hands, feet and gaps around the neckline or ankles.
Does a regular long-sleeve swimsuit automatically have UPF 50+?
No. Coverage alone does not confirm a specific rating. Check whether the product description clearly states that the fabric is UPF 50 or UPF 50+.
Does UPF protection work when swimwear is wet?
The performance depends on the fabric and how it was tested. Ordinary clothing may lose some protection when wet or overstretched, so rely on the confirmed rating and instructions for the individual swimsuit.
Is darker swimwear always more protective?
Darker colours often block more ultraviolet radiation than comparable lighter fabrics, but colour alone does not establish a UPF rating. A light-coloured swimsuit may still provide UPF 50+ protection when properly designed and tested.
Make UPF Part of a Complete Sun-Protection Routine
UPF 50+ swimwear offers a practical way to protect the areas covered by the garment during beach, pool and resort days.
It does not make a person completely protected from the sun, and it does not replace sunscreen, shade or other sensible precautions.
Choose swimwear that combines your preferred coverage with a confirmed UPF rating, comfortable movement and fabric designed for use in water.
