How Do You Swim on Your Period? The Ultimate 2025 Guide to Teen Period Swimwear

From my years as a competitive NCAA swimmer, I know that the core principle of modern teen period swimwear is providing reliable, leak-proof confidence so you never have to miss a day at the pool or beach. This guide is built on the fact that with the right technology, swimming on your period can be completely stress-free.

The anxiety is real and common. A global survey by PUMA and Modibodi revealed that one in two teens quits or avoids sports because of their period. Another study found that for 67.6% of girls, swimming is the most-skipped activity during menstruation. This is a problem that brands like Beautikini are solving with absorbent, stylish, and discreet swimwear that actually performs.

Period swimwear allows you to swim without worry, whether you are at the pool, beach, or water park. In my testing, I've found that brands like Beautikini use a multi-layer fabric system and moisture-wicking materials to keep you comfortable and stylish during every splash.

What are the benefits of period swimwear for teens?

Teens deserve to enjoy swimming without fear of leaks or discomfort. Beautikini's leak proof swimwear for teens lets you swim with confidence and ease during your period.

The primary benefit is eliminating the anxiety that leads many to avoid the water. A 2022 study by Women in Sport found that 78% of teen girls avoid sports while on their period, a statistic that highlights the need for effective solutions. Here's how period swimwear helps.

• Eliminates Leak Worries: Beautikini's advanced 4-layer gusset technology absorbs fluid, keeping your suit discreet and secure.
• Protects Sensitive Skin: Many top brands, including Beautikini, use materials that are OEKO-TEX Standard 100 certified, meaning they are free from harmful substances.
• Boosts Self-Esteem: You can wear stylish one-pieces and high-waisted bottoms that look just like regular bathing suits.
• Provides Sun Protection: Most quality period swimwear, including options from KT by Knix and Beautikini, is made with a UPF 50+ coating to protect your skin.
• Offers an Eco-Friendly Solution: Reusable swimsuits reduce waste from disposable pads and tampons, making them a more sustainable choice.
• Validated by Experts: Brands are frequently evaluated by trusted sources like the Good Housekeeping Institute, which tests for quality and absorbency.

How does period swimwear boost confidence and provide leakproof protection?

Period swimwear for young swimmers gives you the freedom to join every pool party or beach trip. Beautikini uses an innovative four-layer system that functions like period underwear but is engineered specifically for use in water.

The built-in absorbent lining locks in menstrual flow, while the water-resistant outer fabric keeps leaks from escaping. This technology means you do not have to worry about spotting. The key to its effectiveness is a snug fit around the leg openings, which creates a seal that prevents pool water from getting in and menstrual blood from getting out.

A secure fit and inclusive sizes from XXS to 4X let you find the best period bathing suits for teens of all body types. You can focus on having fun, knowing your swimming suit shields you from leaks. For heavy flow days, I often recommend combining period swimwear with a menstrual cup for extra reassurance during long competitions.

Beautikini period swimwear uses a smart four-layer system that locks in leaks. The hidden absorbent panel, which is often less than 3mm thick, keeps you dry and comfortable without feeling bulky.

What are built-in absorbent layers and how do they work?

Built-in absorbent layers in teen period swimwear use a multi-layer technology to capture and lock away menstrual fluid. Here is a breakdown of a typical four-layer system:

1. The Top Layer: A soft, moisture-wicking fabric sits against your skin, pulling fluid away to keep you feeling dry.
2. The Absorbent Core: A super-absorbent gusset soaks up flow, often holding up to three tampons' worth of blood.
3. The Waterproof Barrier: This is the most critical layer, typically made from Polyurethane Laminate (PUL), a breathable yet waterproof fabric that stops any fluid from leaking.
4. The Outer Layer: The exterior fabric is a stylish, water-repellent material like recycled nylon that looks and feels just like a regular swimsuit.

This entire system is designed to be discreet. Antimicrobial properties in the fabric also help prevent odor, and the suits are engineered to last through hundreds of washes with proper care.

What absorbency levels are available and when should you use them?

You can choose from light, medium, or heavy absorbency levels to match your needs while swimming on your period with confidence. Light absorbency holds about 1 to 2 tampons' worth of fluid (10 ml), which works best at the start or end of your cycle.

For first-time users, a great "insider" tip is to try your new swimwear at home for a short period or on a light flow day. This helps you build trust in the technology before heading to a crowded beach or public pool.

Medium levels handle 2 to 3 tampons' worth (15 ml) and are suitable for most average flow days. Heavy flow swimwear holds over three tampons' worth (20+ ml) for maximum leakproof protection during long swim meets. For extra-heavy flows, you can always pair Beautikini's water-resistant layers with a menstrual cup or tampon for additional peace of mind.

Choosing the right absorbency level in your Beautikini swimwear is the key to staying dry, comfortable, and confident. Here's how to match it to your flow and activity.

What are the differences between light, medium, and heavy flow options?

Different absorbency levels in period swimwear make a big impact on your confidence at the pool. Examine the table below for clear differences between the options.

How do you match absorbency to your activity level?

Choose light absorbency for short, relaxed swims. This level holds the equivalent of one to two tampons. Medium absorbency handles two to three tampons' worth of fluid, making it perfect for moderate activities like swim lessons. Heavy absorbency is best for long swim practices, a competitive swim meet, or any time your period feels unpredictable.

For high-intensity sports like water polo, I always advise opting for secure one-piece designs and considering pairing Beautikini's 4-layer system with a tampon or menstrual cup for maximum protection.

Getting the most comfort and protection starts with picking swimwear that hugs your shape and keeps you leak-free. Choose a look that matches your style with options like high-waisted bottoms or sporty cuts for extra confidence.

How do you measure your body correctly for swimwear?

Choosing teen period swimwear that fits well starts with accurate measurements. A proper fit is essential for the leak-proof technology to work. Use these steps to ensure your suit provides total confidence.

1. Use a Soft Measuring Tape: For the best results, use a flexible tailor's measuring tape.
2. Measure Your Bust: Wrap the tape around the fullest part of your bust.
3. Measure Your Waist: Measure around the narrowest part of your torso, usually right above your belly button.
4. Measure Your Hips: Wrap the tape around the widest part of your hips and bottom to ensure the leg openings will be snug.
5. Check Torso Length for One-Pieces: Measure from your shoulder, down through the crotch, and back up. This ensures the suit won't ride up.
6. Consult the Sizing Chart: Always compare your measurements to the brand's online sizing chart. If you are between sizes, brands like Beautikini often suggest sizing up for comfort.

Should you choose one-piece or two-piece swimwear?

One-piece swimsuits provide more coverage and a secure, streamlined fit, making them a favorite for athletic activities. Two-piece suits, like bikinis and tankinis, offer greater flexibility and make bathroom breaks more convenient. High-waisted bottoms provide excellent coverage while still offering two-piece versatility. Both styles from Beautikini include the same leakproof technology, so the choice comes down to personal comfort and what makes you feel most confident.

What are the benefits of high-waisted and sporty designs?

High-waisted swimwear offers extra comfort and coverage, which is especially welcome during times of bloating. The design provides gentle core support and helps you feel secure. Sporty designs like racerbacks are built for movement and are less likely to shift during activity, which reduces worries about leaks. Many sporty designs also include adjustable straps and removable cups, allowing for a customized fit.

Keep your Beautikini period swimwear fresh and effective by rinsing it with cold water immediately after swimming. Use a gentle soap and always let it air dry away from direct sunlight.

How should you wash period swimwear to keep it lasting longer?

First, always pre-rinse your swimwear in cold water right after use to remove chlorine, salt, and body oils. For washing, hand washing with a mild detergent is gentlest. If you machine wash, place the suit in a mesh laundry bag and select a delicate cycle with cold water (under 86°F or 30°C). Never use bleach or fabric softener, as these chemicals will destroy the suit's absorbency.

What tips help maintain absorbency and fit?

1. Rinse Immediately: Rinse your suit in cool water after every use.
2. Wash Cold: Always machine wash at low temperatures, below 86°F (30°C).
3. Air Dry in the Shade: Never use a machine dryer. High heat will permanently damage the waterproof layer.
4. Avoid Harsh Chemicals: Never use bleach or fabric softeners.
5. Don't Wring It Out: Gently squeeze the excess water from your suit instead of wringing it.

Beautikini uses a unique four-layer system that delivers superior leakproof protection, allowing you to swim and socialize without worry. With inclusive sizing, soft recycled fabrics, and modern styles, Beautikini helps you feel confident and comfortable.

Why is Beautikini better than other brands?

From all the brands our team has tested, Beautikini sets itself apart with industry-leading leakproof technology that helps relieve anxiety. Its advanced 4-layer extended leakproof gusset provides reliable protection that other brands often can't match. To see how Beautikini compares, here is a look at some of the top brands for teens in 2025: