One-piece swimsuits for women

To swim lengths without readjusting your straps or bathing in the lake after a walk, the one-piece swimsuit remains the easiest choice. Here, the one-piece swimsuits range from cross-back swim styles to more modest cuts for the beach, so you can find the right support according to your activity.

One-piece swimsuit for swimming or the beach?

The swimsuit for swimming is designed for performance: it has a close fit, a back that is open or crossed, and straps that don’t slip during the crawl. The beach swimsuit favours style and coverage, sometimes featuring more elaborate cups or necklines. If you do both, opt for a sporty model in a colour you love to wear outside the pool.

Finding the right fit and support

The back is the first criterion. A racerback or X-back frees the shoulders for arm movements. A more closed back offers more coverage and reassurance in rough water. In terms of bust support, an integrated support or removable cups provide stability. Try the swimsuit on while raising your arms: it shouldn’t gape or pinch.

Completing your swim outfit

If you prefer to mix and match tops and bottoms, check out the 2-piece swimsuits, swim tops, and swim bottoms. The swim shorts offer more coverage for paddle. All the textile options are on the women's textile page.

Brands of one-piece swimsuits

Speedo and Arena offer training and competition models for swimming. adidas and Zoggs provide sporty swimsuits for regular pools. Roxy brings cuts inspired by surfing, and Fantasie offers beach swimsuits with more support.

One-piece swimsuits on sale

Swimwear features regularly in the swimming sales. The aquatic Black Friday selection also includes discounted models.

Choosing based on your water activities

For club swimming or regular sessions, a racerback swimsuit is the most effective: it doesn’t move during turns and doesn’t hold water. For aquagym or bathing, a more covering cut with integrated support provides more comfort. For activities by a lake or paddle, a model with long sleeves or a high collar better protects the skin from the sun. Finally, if you’re preparing for a triathlon, a one-piece can be worn under a wetsuit without causing friction.

For the beach, there’s nothing stopping you from choosing a printed or dressier model: the important thing is to feel comfortable getting out of the water.

Frequently asked questions

What one-piece swimsuit is suitable for swimming several times a week?

A training model with a racerback, made from pool-specific fabric, withstands chlorine better than a beach swimsuit.

How do you choose your size for a one-piece swimsuit?

It should be fitted without being constricting. A swimsuit that’s too big fills with water and gapes. If you're in doubt between two sizes, the smaller one often fits better while swimming.