10 Best One Piece Swimsuits 2025 in the United States

The baleaf Women's One Piece Bathing Suit is designed with an athletic yet modest style, making it a solid choice for regular swimmers or those doing water aerobics. Its polyester fabric is chlorine resistant, which means it should hold up well over time compared to swimsuits made from nylon. The high neckline and low leg cut offer conservative coverage, suitable if you prefer a more covered look without being restrictive.

The racerback design combined with wide straps allows for a good range of arm movement and provides decent support, while the built-in shelf bra with removable cups adds comfort and shape. This swimsuit is fully lined, which can help with durability and fit. The fit is important, so checking the size chart before buying is recommended to ensure comfort during active use.

It offers UV protection through its material but might not replace a dedicated sunblock. This makes it a practical and durable option for those looking for a conservative, supportive one-piece for lap swimming or training purposes.

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 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.