What is mayo?
Mayo (from French maillot ) is a classic one-piece swimsuit with sewn-on straps. The term directly answers the question: what is a maillot swimsuit? It's a basic, one-piece, closed-back beachwear.

Historically, this is one of the first modern women's swimsuit styles. It emerged as a compromise between the strict moral standards of the early 20th century and the need for comfortable swimwear.
The maillot's design ensures a snug fit and secure hold, making it a versatile choice for both beach relaxation and active workouts in the pool.
Distinctive features
The main design feature of the maillot is its classic sewn-on straps. Unlike a halterneck or a strapless bandeau, maillot straps are securely fastened to the shoulders. They can be thin or wide, but they always form a single piece with the bodice.

The traditional model features a U-shaped, V-shaped, or square neckline. The back remains moderately open, without extreme low-cut necklines.
The bottom cutout is a standard height. It doesn't expose the thighs too high, like 1980s-style models, nor does it cover them completely, like swimsuits with shorts.
Thanks to its one-piece design and fixed straps, this maillot provides excellent bust support. The dense, elastic fabric creates a subtle shaping effect around the waist and stomach.
What to combine with
As part of a classic beach wardrobe, the mayo is combined with pareos, wide-brimmed straw hats and sunglasses.

With its minimalist, closed-back design, this swimsuit easily doubles as a resort-style bodysuit. Pair it with wide-leg linen pants, denim Bermuda shorts, or flowy maxi skirts.

To create a layered look, wear an unbuttoned, oversized cotton shirt, a semi-sheer tunic, or a mesh dress over your swimsuit. This look is perfect for a visit to a beach cafe or a stroll along the promenade.