8 best swimsuit brands for confidence at the beach

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Swimwear shopping can sometimes leave you feeling like you’re underwater. But thankfully, you don’t always have to splurge to find a flattering, high-quality swimsuit. Plenty of swimsuit brands offer stylish, well-made pieces at reasonable prices, and if sustainability is on your radar, there are great options for that, too.

We’ve rounded up the eight best swimsuit brands to make your search easier. Whether you’re after a sexy bikini, a sporty top with adjustable straps, or a one-piece swimsuit for larger busts, this list has you covered. 

8 best-quality swimwear brands for your summer wardrobe

The right swimsuit is a wardrobe essential that makes you feel confident and comfortable. Here are the eight best swimsuit brands that combine quality, fit, and sustainability. 

1. Summersalt 

Summersalt is known for creating flattering swimsuits with comfortable fits and vibrant color-block designs. They make sizes based on over one million measurements from 10,000 women and stock Classic and Long Torso sizes. 

Key pieces: Sidestroke one-piece, Ruffle Oasis one-piece 

Price range: Separates starting at $45, one-pieces starting at $95

Size range: 0–24 

Sustainability: Summersalt’s swimsuit designs use eco-friendly materials, like recycled polyamide.

Pro tip: Pair the Sidestroke one-piece with an oversized shirt for a laid-back beach look. Don’t forget your flip-flops and sunglasses!

2. Andie 

Andie prioritizes well-made, well-cut swimsuits. They champion all body types and personal styles and provide personalized fit advice and sizing support via email. And Andie offers a Style Quiz to help brand newcomers find their perfect suit. 

Key pieces: Amalfi one-piece, Bonita Bikini 

Price range: Separates starting at $52, one-pieces starting at $112

Size range: XS–3XS

Sustainability: Andie uses Eco Nylon in their swimwear, which is soft, sustainable recycled nylon that’s UPF 50+ for sun protection. The company is currently progressing toward a 100% sustainability goal. 

Pro tip: Style the Amalfi one-piece with a cover-up and a wristlet to keep your essentials handy by the pool. Add a pair of sandals, and you’re set to soak up the sun. 

3. Stitched Swim 

This brand of swimwear designs classic bathing suits with a modern twist. Their pieces are made in the U.S. and are known for being lightweight and high-quality. Stitched Swim specializes in sleek one-piece swimsuits and elegant wrap-style bathing suits, all constructed from premium nylon and spandex blends. 

Key pieces: Mendoza one-piece, Valentina bikini 

Price range: Separates starting at $25, one-pieces starting at $85

Size range: XS–LG

Sustainability: While this brand focuses less on eco-friendliness than others, they produce in small batches. And every purchase donates a bathing suit to a child in a local swim program. 

Pro tip: Stitched Swim’s one-piece swimsuits double as stylish bodysuits. Pair yours with high-waisted jeans to go from beach to street. 

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4. Vitamin A

Vitamin A blends sustainability with sleek, fashion-forward swimwear. This California-based brand pioneered using recycled nylon in swimwear, creating luxurious, eco-friendly suits that feel and look fantastic. Vitamin A’s signature EcoLux BT fabric is made from REPREVE recycled polyester yarns and offers a flattering fit. 

Key pieces: Gia Triangle Top, Terra High Neck One-Piece 

Price range: Separates starting at $90, one-pieces starting at $215

Size range: XS–XL

Sustainability: Vitamin A is partnered with 1% for the Planet to donate a portion of their sales to protect the ocean. And EcoLux is the first premium swim material made from recycled nylon on the market. 

Pro tip: Pair a ribbed Vitamin A bikini top with fisherman sandals, a beach cover-up, and an oversized button-down shirt. Add a tote bag stocked with poolside essentials like a book and sunglasses. 

5. Jade Swim 

Jade Swim creates modern, minimalist swimwear that moves with you. Their pieces, designed by fashion editor and stylist Brittany Kozerski, offer second-skin fits and innovative silhouettes. Jade Swim’s sporty swimsuits and high-leg cuts elongate the legs, making them a favorite among people seeking a streamlined look. 

Key pieces: Contour One-Piece, Anya Bottom 

Price range: Separates starting at $80, one-pieces starting at $198

Size range: XS–XL 

Sustainability: Jade Swim uses responsibly sourced, sustainable materials made from recycled fibers. They only offer solid-colored fabrics to avoid excessive water usage, which is typical when creating patterned swimsuits. 

Pro tip: Create a simple bodysuit outfit by styling a Jade Swim one-piece with a structured blazer and denim shorts. This look works perfectly with a shoulder bag and oversized sunglasses.

6. Left on Friday 

Left on Friday is an apparel and bikini brand for active women. They design sporty swimsuits with ultra-soft, quick-drying fabric—ideal if you want a fashionable and high-performance suit. Left on Friday’s suits offer an excellent balance of compression and stretch for activities like surfing and volleyball, and they have a unique line of tops for women with large chests. Their motto: Do it all in one suit. 

Key pieces: Streamline Suit, Far Out Top D+

Price range: Separates starting at $110, one-pieces starting at $200 

Size range: XS–XXL

Sustainability: Left On Friday’s pieces are made with durable, chlorine-and-sun-resistant fabrics that last longer, reducing waste. 

Pro tip: Pair a Left On Friday one-piece swimsuit with wide-leg linen pants for a vacation-ready outfit. Wear this to lunch or with a cropped leather jacket in the evening. 

7. Eres

This French brand redefines swimsuit shopping by offering bikini sets and one-piece swimsuits with stunning minimalist designs. Their Spring collection channels seashells and water, perfect for lounging on the beach. Eres is known for their beautiful, understated colors and prints. 

Key pieces: Posidonia bustier one-piece, Navire full-cup triangle 

Price range: Separates starting at $210, one-pieces starting at $420 

Size range: 38–46

Sustainability: Eres uses durable, high-quality Peau Douce fabric for long-lasting wear. 

Pro tip: Elevate your summer look by styling an Eres bikini top under a lightweight linen blazer with a high-waisted maxi skirt. Finish the look with flat sandals and a crossbody bag. 

8. Galamaar 

Galamaar is a swimsuit brand that blends vintage aesthetics with contemporary design. Their suits are timeless and trendy, in solid colors and fun prints. Galamaar’s commitment to quality is evident in how their swimsuits are meticulously cut, made of Italian fabric, and produced in California. 

Key pieces: Simone One Piece, Simone Retro Top 

Price range: Separates starting at $122, one-pieces starting at $248 

Size range: XS–XL

Sustainability: Galamaar swimwear is made from eco-friendly recycled Econyl®.

Pro tip: Pair this brand’s Tap Shorts with a cropped, oversized shirt and espadrilles for a stylish ensemble that shows just enough skin. Add a straw beach bag, and don’t forget the sunscreen. 

What to consider when buying swimwear: Quality, material, and more 

Buying a swimsuit online can feel like a gamble, but keeping a few factors in mind will help. Are you looking for a sporty swimsuit for swimming laps or a sexy bikini for a tropical getaway? Identify your style and comfort priorities to make the hunt easier. 

Next, pay attention to the swimsuit’s materials and construction. Swimsuits made with a blend of elastane and polyamide offer a stretchy, flattering fit, while nylon and polyester blends provide durability and chlorine resistance. And elements like adjustable straps, built-in bra support for larger busts, or high-waisted bikini bottoms can enhance your comfort and appearance.

Lastly, review the company’s return policy when you buy a swimsuit online. Since sizing varies between swimsuit brands, check whether or not a brand offers easy exchanges or refunds. This gives you the flexibility to return or exchange a bikini top or pair of high-waisted bottoms if they don’t fit. 

Find top women's swimsuits on ThredUp

Finding a high-quality swimsuit doesn’t have to mean emptying your wallet. ThredUp makes finding sustainable secondhand swimsuits from top brands easy, offering an eco-friendly way to refresh your wardrobe for summer or an upcoming vacation. 

Whether searching for a barely-there bikini, a supportive one-piece, or a sporty swimsuit built to move, ThredUp stocks a wide range of styles at budget-friendly prices. And if you’re worried about buying online, our size filters remove the guesswork so you can find your perfect fit quickly. 

With 50,000 new items dropping daily, there’s always something fresh to discover on ThredUp. Browse our curated swimwear selection today.