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ALPHX Comfort Class Boxer Brief - Athletic Fit - Midnight Black |

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ALPHX Boxer Briefs Athletic Fit in Midnight Black: More Style and a Better Fit 

Elevate your everyday essentials with the most comfortable men's boxer briefs on the market. Our ALPHX Boxer Brief Athletic Fit was designed for men with large or muscular thighs and our timeless Glacier Blue is sophisticated and stylish like you.  Our timeless Midnight Black is inspired by the night sky full of mystery and possibility. And our black will hold its color without fading wash after wash. We think our ALPHX Midnight Black will always be the new black.

Testimonial from James K: 5 Stars!The two sizes for legs is genius. I’m a 32” waist and used to buy 34” to fit my legs.  No more.”

Perfect Fit for Larger Thighs

Big legs? Thick Thighs? Muscular Quads? We got you covered. Our exclusive athletic cut is tailored to accommodate larger thighs comfortably. 

The Athletic Fit is the same sleek style as our Modern Fit with an extra 1.5 inches in leg circumference. No more sizing up in the waist to fit your legs! 

ALPHX Boxer Briefs eliminate painful pinching and annoying ride-up, allowing you to select your ideal leg fit and waist size for a customized experience.

Key Features For Ultimate Comfort and Support:

  • The double-lined, contoured pouch is meticulously crafted with depth where you need it ensuring maximum comfort and support throughout the day.

  • Designed for Athletes and Active Lifestyles: With a 4.5-inch inseam, these boxer briefs are perfect for preventing chafing while remaining short enough to wear under most shorts.

  • 4-way stretch and our low-profile turn-back hem ensure that these boxer briefs stay in place, while eliminating awkward visible binding lines under your trousers.

Premium Materials for Superior Comfort:

  • Crafted from a blend of lightweight, breathable natural cotton and luxuriously soft modal, these boxer briefs are unbelievably soft to the touch.

  • A touch of elastane ensures strength, stretch, and recovery, while the waistband, dyed to match the underwear and subtly embossed with the ALPHX logo, provides a sleek, modern look.

Earth Friendly:

  • Made from 94% plant-based fibers.

  • Shipped in biodegradable packaging.

  • Partnered with EcoCart to offset our carbon footprint.

Comfort is non-negotiable when it comes to your first layer of clothing. ALPHX Boxer Briefs Athletic Fit in Midnight Black are designed to make you feel comfortable in your own skin, every day.

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      Be Comfortable

      Our Underwear is understated, but never basic. ALPHX is designed for everyday comfort and we think, stylish enough for special occasions too.  You be the judge.  Try a pair risk free with our Be Assured Guarantee.

      We start with materials that are soft to the touch:  lightweight breathable natural cotton and modal made from beech tree bark pulp. (Doesn’t sound soft, but believe us when we say it is.) Then, for strength, stretch, and recovery, we combine these two materials with just the right amount of elastane. Our tonal waistband is obnoxious free subtly embossed with our signature ALPHX logo.

      • 56% Cotton, 38% Modal, 6% Elastane
      • Ethically made in Sri Lanka
      • 94% Sustainable. 100% Comfortable
      • 155 GM lightweight, breathable cotton
      • 4-way stretch for movement and recovery
      • Double-lined contoured pouch for comfortable support
      • Back rise slightly higher than front to prevent ride-up
      • 1.5" soft contoured waistband follows your natural curve to prevent pinch and roll down
      • Tear-away labels for tag free comfort
      • Locker loop for convenience


      Care Instructions

      • Machine wash cold with similar colors
      • Do not bleach
      • Tumble dry low
      • Do not iron
      • Do not dry clean
      • Do not use fabric softener


        Peace of Mind, Guaranteed


        At ALPHX, we believe shipping costs shouldn't come between us. That's why we offer free shipping on every purchase. Restrictions apply.

        Free Shipping

        • Free Shipping on All Orders: Every order within the U.S. ships for free.
        • Free Shipping on All Returns: Subject to our return policy, all returns within the U.S. are shipped free of charge.
        • Shipping Method: Domestic orders are shipped via USPS First Class, with tracking information provided.

        Continental U.S.

        Estimated Shipping Times USPS First Class

        East Coast 2-3 Days
        Midwest 3-4 Days
        West Coast 4-5 Days


        These estimates are based on typical delivery times and may vary due to factors such as weather conditions, holidays, and other unforeseen events. For the most accurate and up-to-date information, it's always best to check directly with USPS through their website or customer service.

        BE ASSURED

        We want you to give ALPHX a risk-free try. If you find that our product isn't for you (though we’re confident you’ll love it), your purchase is on us. Here's how it works:

        • First Purchase Only: The Be Assured guarantee applies to your first underwear purchase from
        • Multiple Items: If you purchase more than one pair, try on just one before removing the others from their packaging. If the first pair isn’t right, the rest can still be returned under our standard return policy.
        • Refund Process: If ALPHX isn’t a fit for you, we'll happily issue a refund. We'd love to hear your feedback to help us improve.
        • One Use Per Household: The Be Assured guarantee is limited to one use per household and must be claimed within 30 days of the original purchase date.

        Request a Be-Assured Refund


        ALPHX underwear in their original, unworn, and unwashed condition may be returned for a refund up to 30 days after the original purchase date. We'll even cover the shipping cost.

        Request a Return Label


        We understand the hassle of ordering the wrong size. That’s why we offer fast, free exchanges.

        • Easy Exchanges: If you need a different size or color, we’ll send out your replacement items immediately, without waiting for your return to be processed.
        • Price Protection: The replacement items will be shipped at the same price you paid for the original order.
        • Shipping Costs Covered: Both the return and the new items ship free of charge.

        ALPHX underwear in their original, unworn, and unwashed condition may be exchanged for an alternate size or color up to 30 days after the original purchase date.

        Experience ALPHX with confidence, knowing that we’ve got your back every step of the way. Thank you for choosing ALPHX!

        Request an Exchange


        • We have enhanced our International Shipping Process to provide faster service and an improved overall experience. Our new process includes collecting prepaid duties where applicable to avoid unnecessary customs delays.

          Duties, Taxes, and Shipping Costs

          You will be charged the appropriate duties and taxes where required, in addition to the shipping cost for DHL’s Standard International Service. These charges will be clearly displayed at checkout.

          Delivery Estimates and Tracking

          At checkout, you will be shown the estimated delivery time as quoted by DHL. For most locations, the estimated delivery time is between 6-12 business days. A tracking number will be provided in your confirmation email for you to monitor your shipment.

          Free Shipping on Orders of $75.00 USD and Above

          Customers shipping orders to the following countries will enjoy free shipping on orders of $75.00 USD or more: Australia, Austria, Belgium, Bosnia & Herzegovina, Bulgaria, Canada, Croatia, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, Germany, Gibraltar, Greece, Guernsey, Hungary, Iceland, Ireland, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Macedonia, Malta, Moldova, Mexico, Monaco, Montenegro, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, and the U.K.

          Orders up to $74.99 USD will be charged a flat rate of $10.00 USD.

          Discounted Shipping Rates

          Customers shipping to the following countries will enjoy discounted rates from DHL. Rates and estimated delivery times will be shown at checkout: Algeria, Angola, Anguilla, Antigua & Barbuda, Argentina, Armenia, Aruba, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belize, Benin, Bermuda, Bhutan, Bolivia, Botswana, Brazil, British Virgin Islands, Brunei, Burkina Faso, Burundi, Cambodia, Cameroon, Cape Verde, Caribbean Netherlands, Cayman Islands, Chad, Chile, China, Colombia, Comoros, Cook Islands, Costa Rica, Curaçao, Cyprus, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eswatini, Ethiopia, Falkland Islands, Fiji, French Guiana, French Polynesia, Gabon, Gambia, Georgia, Ghana, Greenland, Grenada, Guadeloupe, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Hong Kong SAR China, India, Indonesia, Israel, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Kuwait, Kyrgyzstan, Laos, Lesotho, Macau SAR China, Madagascar, Malawi, Malaysia, Maldives, Martinique, Mauritania, Mauritius, Mayotte, Mongolia, Montserrat, Morocco, Mozambique, Namibia, Nauru, Nepal, New Caledonia, New Zealand, Nicaragua, Nigeria, Niue, Oman, Pakistan, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Qatar, Réunion, Rwanda, Samoa, São Tomé & Príncipe, Saudi Arabia, Senegal, Seychelles, Sierra Leone, Singapore, Solomon Islands, South Africa, South Korea, Sri Lanka, St. Barthélemy, St. Helena, St. Kitts & Nevis, St. Lucia, St. Martin, St. Vincent & Grenadines, Suriname, Taiwan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad & Tobago, Tunisia, Turkey, Turks & Caicos Islands, Tuvalu, Uganda, United Arab Emirates, Uruguay, Uzbekistan, Vanuatu, Vietnam, and Zambia.

          Additional Charges

          The customer is responsible for any additional taxes and duties owed.

          Be Assured Guarantee

          Our Be Assured Guarantee applies to international orders as well. ALPHX underwear in their original, unworn, and unwashed condition may be returned for a refund up to 30 days after the original purchase date. Customers are responsible for all return shipping costs.

          Transport Delays and Expedited Shipping

          Delivery times are estimates only and may be subject to delays beyond our control. You will also be given options for expedited shipping at checkout.

          We are committed to providing the best possible service and ensuring your satisfaction with every order. Thank you for choosing ALPHX!




          Bennett is 5'9" and is wearing an XS MDRN FIT Boxer Brief

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          FREE Shipping on all orders over $50Buy 3 get 20% offPay in 4 instalments available at checkoutBuy 5 get 25% off

          Other Colors Available

          ALPHX Comfort Class Boxer Brief - Athletic Fit - Midnight Black |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Midnight Black |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Midnight Black | $36.00
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Moss Green |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Moss Green |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Moss Green | $36.00
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Maritime Navy Blue |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Maritime Navy Blue |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Maritime Navy Blue | $36.00
          Rating: 5.0 out of 5
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Frost White |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Frost White |
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Frost White | $36.00
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Glacier Blue|
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Glacier Blue|
          ALPHX Comfort Class Boxer Brief - Athletic Fit - Glacier Blue| $36.00

          Choose your fit

          MDRN FIT

          Our MDRN Fit sits on your hipbone, just below your natural waist, and has a slimmer contemporary leg fit. With 6% elastane for ease of movement and our stay-put leg construction, the ALPHX MDRN Fit stretches with you as you move without stretching out or riding up. Our MDRN Fit is perfect for guys who wear regular to slim/skinny-fit jeans.

          ATHLTC FIT

          Looking for more leg room? We added one additional inch in leg circumference to the MDRN Fit to create our ATHLTC Fit, making it an excellent option for guys with thicker thighs or large/muscular legs. In addition, our ATHLTC Fit is perfect for guys who wear athletic-fit jeans or prefer a looser leg fit in their underwear. Oh, and unlike the airlines, we don't charge more for additional leg room. Medium waist and muscular thighs? Choose Medium ATHLTC. Large waist and average to thinner legs? Choose a Large MDRN. Try our easy-to-use Fit Finder to help you determine which combination is right for you. As we get to know you better, we will expand our size offering.

          Available in our Trunk and Boxer Brief styles in sizes S to XL.