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A Personal Fit Is a Better Fit

Experience ultimate comfort with ALPHX® underwear, engineered for a more personal fit with six waist sizes plus options for slim, average, and muscular thighs.

Find your fit size

Popular Bundles

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    Boxer Brief Bundle

    Our boxer briefs combine the support of a brief with a no-chafe 4.5-inch inseam. The Modern Fit is tailored for Slim to Average Thighs. Need more room? Try the Alphx Athletic Fit Boxer Brief, offering 1.6 extra inches in thigh circumference for added comfort without sacrificing style.

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  •  

    Trunk Bundle

    Designed for comfort, our trunks offer the support of a brief with a no-chafe 2-inch inseam. The Modern Fit is perfect for Slim to Average Thighs. Need more room? The Alphx Athletic Fit Trunk adds extra thigh width for enhanced comfort and style.

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  •  

    Brief Bundle

    We’ve redefined the classic brief. ALPHX Briefs sit just below the natural waist, offering full back coverage and a high-cut leg for maximum freedom and a flattering fit on every body type.

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  • 96% plant based fabric

    Experience the perfect blend of comfort, sustainability, and style with our men's underwear, made from 96% plant-based fabric. Designed for the modern man who values performance and the planet, this ultra-soft material feels like a second skin, keeping you cool, dry, and comfortable all day. Eco-conscious and high-quality, our underwear reduces environmental impact without compromising on comfort. Choose underwear that supports both your lifestyle and the Earth.

  • Contoured Pouch

    Our innovative design offers exceptional support where you need it most. Enjoy ultimate comfort and freedom of movement, whether you're at the gym, in the office, or relaxing at home. Upgrade your essentials with underwear that works as hard as you do—comfort and style, all day long.

  • Seam Free Rear

    Underwear so comfortable, you’ll forget you're wearing it. Crafted with precision to eliminate irritating back-seams, our design offers a smooth, chafe-free fit that feels like you’re wearing nothing at all. Perfect for everything from work to workouts, the seam-free back eliminates bulky seams and prevents uncomfortable "wedgies," giving you unmatched freedom and all-day comfort. Treat yourself to the comfort you deserve—because there's no room for compromise when it comes to your essentials.

  • Four Way Stretch

    Unmatched flexibility and support featuring four-way stretch technology. It is designed to move with your body without stretching out or riding up on you. Whether you're hitting the gym, running errands, or relaxing at home, our four-way stretch ensures maximum comfort and unrestricted mobility. Soft, breathable, and built for performance, this underwear keeps up with you—no matter where the day takes you.

Try them all...

One of Everything Bundle

Select One of Each Style and Save 20%

Vista rápida
ALPHX Comfort Class Slip Blanco Escarcha
Precio regular
$32.00
Precio regular
Precio de venta
$32.00
Vista rápida
ALPHX Maletero Modern Fit Comfort Class Verde Musgo
Precio regular
$34.00
Precio regular
Precio de venta
$34.00
Vista rápida
ALPHX Calzoncillo bóxer Comfort Class de ajuste moderno, color azul marino marítimo
Precio regular
$36.00
Precio regular
Precio de venta
$36.00

Agregar al carrito
$32.00
$32.00
Agregar al carrito
$34.00
$34.00
$36.00
$36.00

Our Promise to you

  • Personalized Fit

    Underwear engineered for a more personal fit, providing six waist sizes with optionstailored for slim, average, and muscular thighs.

  • Engineerd for Comfort

    Our products are made from soft, breathable cotton, naturally antimicrobial modal, and a hint of elastane for stretch, offering lasting comfort and durability for everyday wear.

  • Environmentally Conscious

    Crafted with care from 96% plant-based premium fibers, ethically sourced and responsibly manufactured. Shipped in minimalist, biodegradable packaging, ALPHX lets you feel great about your purchase—inside and out.

  • Thousands of positive reviews

    We love hearing stories from our customers praising the comfort, fit, and quality of our underwear.

Fit for everyday

Modern Fit Underwear

Our Modern Fit offers a sleek, slimmer cut that sits just below the waist, with tailored legs for slim to average thighs—designed for a secure, stay-put fit.

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For muscular gents

Athletic Fit Underwear

Our Athletic Fit provides the same contemporary fit as the Modern with extra legroom for men with larger or muscular thighs—delivering a secure, stay-put fit with added comfort.

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Some of our favourite reviews

Fit and feels great. will definitely buy more!

Edwin W.

Super comfortable doesn’t ride up!

Sheridan

lightweight, still supportive, and right amount of room

Joseph

The athletic fit is perfect for all those who are fitness participants and have additional muscles to cover. The comfort is great, the fabric is smooth for a wonderful feeling all day.

Edward T

the fabric is soft and the fit perfect, especially the ATHLTC option for those, like me, with muscular legs.

Simone

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