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Men's undershirt

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    To face the winter chill or extreme sporting conditions, the undershirt, long-sleeved T-shirt, offers you the best solution. Its thinness allows you to avoid the "bibbendum" effect while still being warmly dressed. Since 1938, Armor-Lux, the famous Breton brand, has drawn inspiration from the marine world to create comfortable, practical, and stylish clothing for everyday wear.

    Men's undershirt colors

    The long-sleeved t-shirt, or undershirt, is perfect for layering under a sweater or sweatshirt. Our collection comes in basic colors, from white, black, navy blue, light blue, light gray, dark gray, and red, making them easy to match.

    Materials, sizes and attributes

    Worn as a base layer, long-sleeved base layers and T-shirts allow you to stay warm indoors or enjoy the outdoors in comfort. Depending on your thermal protection needs, choose the material and cut that suits you. Natural materials such as cotton, combed cotton, merino wool, wool and silk, as well as new technical materials, guarantee quality thermoregulation properties. The attention paid to sewing and cutting details ensures ease of movement. Discover our models with round necks, V-necks, funnel necks, or high collars, available in sizes S to 4XL.

    Buy a men's undershirt

    Don't hesitate any longer and take advantage of secure payment with the option to pay in 2X, 3X, or 4X interest-free installments for purchases over €80. Delivery is free for purchases over €100, and you benefit from free returns within 15 days. And don't forget to sign up for the Armor-Lux loyalty program or our newsletter to be the first to know about our private sales, sales, promotions, and clearance sales, and benefit from the best prices.

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