10 Best One Piece Swimsuits 2025 in the United States

The Speedo Women's Endurance+ Flyback One Piece swimsuit stands out with its durable material made from a 50% polyester and 50% PBT blend, designed to resist chlorine damage much better than typical swimsuits. This means it lasts longer and keeps its color without fading, making it a great choice for regular swimmers who spend time in pools. The fabric also offers four-way stretch, which hugs the body comfortably while retaining its shape after use.

Style-wise, the thin, streamlined straps provide a sleek look and include reinforced binding for added durability, though they offer moderate support which might not suit those needing extra bust support. The suit has a pull-on closure, making it easy to wear, but it requires gentle hand washing to maintain its quality. Coverage is typical of a team-style one-piece, balancing modesty and freedom of movement.

The dense fabric likely provides some defense against sun exposure. This swimsuit is ideal for frequent swimmers who value lasting performance and a comfortable, snug fit, although those looking for high-impact support or quick machine wash options might want to consider other models.

The Speedo Women's Swimsuit One Piece ProLT Super Pro Solid Adult is an excellent option for swimmers who value performance and durability. Made from Ecco ProLT fabric consisting of 82% reprocessed polyester and 18% creora highclo elastane, it offers impressive durability and shape retention, which is ideal for regular use throughout a swim season. The fully lined design adds to the suit's durability and comfort, ensuring you'll feel confident in the water.

This swimsuit is ultra-compressive, designed to fit tightly to reduce drag and improve performance. This snug fit might feel a bit restrictive on land but will relax slightly in the water. If you prefer a more comfortable, less restrictive fit, it's advisable to size up based on the competitive fit size chart provided by Speedo. The thick strap silhouette ensures a secure fit that won't bind or gap, adding to the support and comfort.

Style-wise, the solid color and sleek finish give it a classic, timeless look that many will appreciate. The suit is imported and requires hand washing, which might be seen as a minor inconvenience for some. This Speedo swimsuit is well-suited for competitive swimmers and those looking for a durable, supportive, and stylish one-piece swimsuit but might not be the best choice for casual swimmers looking for more relaxed comfort and easy care.

The La Blanca Women's Standard Island Goddess Lingerie One Piece Swimsuit is crafted from an 83% Nylon and 17% Elastane blend, providing a comfortable and stretchy fit. Its firm fit and shirred seams help to sculpt the body for a flattering silhouette. The swimsuit features adjustable shoulder straps and removable cups, offering customizable support and a tailored fit.

With full back coverage and high-cut sides, it ensures a secure and confident swim experience. The sleek scoop neckline and elegant design make it stylish for beach outings or poolside relaxation. However, it is important to note that the swimsuit requires hand washing and careful maintenance, including rinsing in cold water and avoiding direct sunlight to preserve its fabric qualities.

This one-piece is well-suited for those looking for a stylish, supportive, and flattering swimsuit but may require extra care in its upkeep.