4 Layers Bikini Period Panties for Swimming
We’re patented for a reason. Independently lab tested and scientifically proven to keep you dry, fresh and odour controlled.
01 Crotch Layer. No Side Leaks
In the crotch area, we use a special design to stop side leaks. You can move, walk, or sit without worry.
02 Absorbent Layer. Strong Absorptuon
The absorbent layer uses polyester, which can hold at least 45ml of liquid. That’s more than a regular pad.
03 Leakproof Layer. PFAS Free
We use TPU, a soft and safe waterproof material with no harmful chemicals. It keeps liquid inside but still lets air flow.
04 Outer Fabric. 50+ UPF
You can choose organic cotton or bamboo fiber for the main fabric. Both are soft, breathable, and good for the skin.
Best Bikini Period Panties for Swimming
These bikini-style period panties are made for swimming and give you the freedom to enjoy water activities, even during your period. They look just like regular swimwear but include built-in layers that absorb menstrual flow and help stop small leaks. The fabric stays soft and smooth in water, without feeling heavy or bulky. You can wear them at the pool, beach, water park, or even in swim classes. The fit is secure and comfortable, and the materials are free from PFAS or other harmful chemicals. Washable and reusable, this is a simple and safe option for teens and adults who want both protection and style in one design.
High Absorbent
Anti Leakage
Odor Control
Certified Organic
12-Hour Leakproof, Odor-Control & Antibacterial
This swimwear is designed to offer long-lasting leak protection for up to 12 hours, making it a practical choice for active days in and around water. The inside layers can hold menstrual flow while keeping moisture locked in, helping you feel dry and safe. A special lining helps reduce unwanted smells and keeps the fabric fresh and skin-friendly. The fit stays in place during movement, without folding or sliding, so you can swim, walk, and relax with confidence. It’s a simple solution for period care that works well for both teens and adults.
- Trusted by over 200,000 happy users.
- Loved & reordered by big brands.
- Bacteria Resistance.
- Odor Absorbing.
- 12 Hours Sustainability.
- Up to 40ml absorbency.

40ml Capacity Swimwear for Period Protection
This swimwear is made to hold up to 40ml of menstrual flow, giving you strong protection while in or near water. The built-in absorbent area is thin but effective, helping to manage your period without extra products. It feels light, stays in place, and doesn’t look bulky when wet. The design also includes added support at the sides to help prevent leaks during movement. Whether you're swimming for fun or relaxing at the beach, it offers a simple way to stay active with comfort and peace of mind.
Swim Period Underwear PFAS Free
This period swimsuit is made without PFAS, a class of synthetic chemicals known for their long-term persistence in the environment and the human body. Commonly referred to as “forever chemicals,” PFAS have been used in some textile treatments to enhance liquid resistance, including in menstrual products. However, their potential health and environmental impacts have raised increasing concerns. This swimwear uses only PFAS-free materials and does not rely on chemical coatings for absorbency or leak protection. Instead, its multi-layer structure manages menstrual flow through physical absorption and barrier design, ensuring both functionality and material safety. All components are tested to meet relevant safety and performance standards.
Four-way Stretch & Elegant Outfit
This swimwear is made for comfort, movement, and a clean look during your period. The fabric stretches in four directions, so it fits well and stays in place while you swim or walk. Even when wet, it keeps its shape and stays smooth on the body. Inside, soft layers absorb menstrual flow without adding bulk. The material dries fast, feels light, and does not show through. It also includes a layer that helps control smell and keeps you feeling fresh. This design is a simple choice for people who want period protection and a nice, elegant fit at the same time.
- Outer Fabric: 82% Polyamide 18% Elastane
- Leakproof Fabric: 100% Polyester (recycled) & 100% Polyurethane
- Absorbent Fabric: 100% Polyester (Biodegradable)
- Lining: 88% Polyamide 12% Elastane
- Four-way Stretch
- Quick-dry Material
- No Slipping

UPF 50+ (Customizable)
This menstrual swimwear offers UPF 50+ sun protection, effectively blocking over 98% of harmful UV rays. It's ideal for beach outings, outdoor swimming, and any activity with prolonged sun exposure. The fabric provides built-in UV defense, so there's no need for extra sunscreen underneath. Custom sizing, colors, or branding options are also available to meet different market needs.
Support OEM/ODM & Instock Wholesale
- Free Sampling & Prototyping
- Quality Guarantee & Hassle-Free Returns
- Responsive After-Sales Service
- Flexible Customization & OEM Support
Flexible Bundling: 3-Pack / 5-Pack / OEM Available
We offer flexible packaging solutions tailored to your needs — whether you’re selling on Amazon, running a boutique store, or doing wholesale. Options include 3-pack, 5-pack, or customized bundles upon request.
Fast Intro
Period Swimwear GRS05
Premium period swimwear for brands: low moq, customizable, PFAS-free, sustainable fabrics like organic cotton, bamboo & modal. OEM/ODM with strict quality control.
Product SKU: GRS05
Product Brand: Period Factory
Product Currency: USD
Product Price: 2.3
Product In-Stock: InStock
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