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The Beginning of a long story
Elegant. Discreet. Essential.

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Why choose Troisième Bouton?

Freedom, elegance, and discretion

A subtle design, a refined collar cut, and a carefully chosen off-white shade allow Troisième Bouton to remain invisible beneath your shirts, even with the top two buttons undone. From boardroom hours to evening encounters, it delivers flawless style at every moment. Unfailing elegance, effortlessly carried through the day.

Comfort and perfection

The soft and breathable material of Troisième Bouton envelops your skin with a lightweight sensation, like a second skin. Thanks to its temperature-regulating ability, Troisième Bouton keeps you cool throughout the day, offering optimal comfort even during your most intense moments.

Confort et perfection Confort et perfection

Protecting your shirts and polos

By absorbing sweat and limiting direct contact with your skin, Troisième Bouton preserves your shirts and polos from sweat stains and friction, thereby extending their lifespan. Say goodbye to sweat marks and wear that damage your quality garments.

The Excellence of Made in France

Troisième Bouton is committed to redefining men's fashion with a responsible and timeless approach. Crafted from superior quality organic cotton, our undershirts are the result of exceptional French craftsmanship, carefully developed in our partner workshop in the heart of Paris.
Each piece reflects our demand for excellence and our commitment to ethical and environmentally friendly practices.

Our Troisième Bouton undershirts offer a unique combination of comfort, discretion, and durability.

Les avantages de Troisième Bouton

Printed label
For uncompromised comfort, the label is directly integrated inside the collar, eliminating any risk of friction or discomfort. A discreet solution that provides a real sense of well-being daily.
Well-designed sleeves Carefully crafted, the sleeves ensure optimal underarm protection while remaining perfectly fitted. They are discreet and designed to harmoniously integrate under your t-shirts and polos.
The Troisième Bouton collar
Resulting from innovative design, our collar is designed to remain invisible under your shirts and polos. Its unique shape combines simplicity and practicality, offering natural freedom of movement and impeccable fit.
High-quality fabric
Made from premium organic cotton (190 g/m²) enriched with 7% elastane, this fabric combines flexibility, durability, and softness. It ensures a perfect fit and lasting comfort throughout all your movements.
Tricolor Flag
This refined detail embodies elegance and craftsmanship, adding a subtle French touch to each piece. A finish that underscores our commitment to quality and authenticity.
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  • Freedom every day : Vous profitez chaque matin de la liberté de porter la chemise de votre choix, sans vous soucier de la visibilité de votre maillot de corps lorsque vous laissez les deux premiers boutons ouverts.
  • Exceptional comfort : Made from soft, breathable materials that feel like a second skin, while regulating temperature to keep you fresh throughout the day.
  • Protection for your shirts and polos :
    Absorbs sweat and reduces friction, extending the lifespan of your premium garments.
  • French expertise : Proudly made in France, combining artisanal craftsmanship with timeless elegance.
  • Eco-Responsible Durability : Crafted from organic cotton with a strong focus on sustainability and ethical practices.

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100% French manufacturing

100% French manufacturing

Troisième Bouton is entirely made in France, in a specialized partner workshop that adheres to the highest standards of quality and sustainability. This choice not only ensures rigorous control at every stage of production but also highlights the excellence of French craftsmanship. By wearing our product, you embrace a carefully designed piece rooted in a rich textile tradition while supporting the local economy and responsible practices.

High-quality materials

High-quality materials

The Troisième Bouton undershirt is crafted from an exceptional fabric, composed of 93% organic cotton and 7% elastane, providing flexibility and elasticity for a perfect fit on every body type.

Woven in France, this cotton comes from environmentally friendly farming practices, ensuring both comfort and durability. Resistant to washing, it maintains its shape and offers excellent breathability, delivering a light and fresh feel throughout the day.

Discretion under your Shirts and Polos

Discretion under your Shirts and Polos

The true distinctive advantage (or USP for marketers) of our undershirt lies in its complete discretion under shirts and polos. Thanks to its carefully designed cut, Troisième Bouton remains perfectly discreet at the neckline, even when you choose to unwind and leave your top two buttons undone. This thoughtful finish allows you to wear your shirts and polos with elegance and confidence, maintaining a relaxed look while protecting your garments from sweat marks. You’ll enjoy an impeccable appearance in any situation, without ever compromising on comfort.

Customer Service

Available Monday to Friday from 10 a.m. to 6 p.m. (French time) and Saturday from 10 a.m. to 2 p.m.

Secure Payment

Shop with confidence on our fully secure website.

Fast Delivery

Free delivery in mainland France, with shipping available across the European Union and internationally.