Thoughtfully designed from concept to production, this boxer brief is our take on a modern, upgraded base layer. We've paired performance materials and purposeful design to solve the everyday frustrations presented by traditional underwear. Move through your day in boxer briefs that were designed to move with you.

Our Athletic Fit Boxer Briefs fit true to size in the waist and have the same comfort enhancing features, performance fabric and waist size as our Standard Fit Boxer Briefs. The difference between the two product lines is the Athletic Fit features larger leg openings to accommodate guys with larger thighs - for instance, a medium size Athletic Fit boxer brief will fit guys with a 23" or more thigh circumference measuring 12" down from the waistline (the area where a waistband normally sits on your hips) - see our Fit Guide for the thigh circumference fit guide for all sizes.

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    • Signature Breathe Zones to regulate airflow and ventilation
    • Grip elastic on the thighs to keep the legs from riding up
    • Quick-access fly allows for a fast and more natural movement when nature calls
    • Supremely soft microfiber that is breathable and featherlight
    • Anti-odor to keep you and your gym bag fresh
    • Moisture-wicking to manage sweat during any level of activity
    • Quick-drying allows you to pack light and do laundry anywhere (hang to dry in just a few hours)
    • Blended with spandex for 360° stretch and ease of movement
    • 6.5" inseam
    • Thick, no roll waistband stays put on your waist
    • Understated waistband with a white and textured stripe layered on top of a classic black
    • The waistband elastic has just the right amount of stretch and resistance to grip your waist without leaving marks on your skin
    • Contoured double-layered pouch conforms naturally to the shape of your goods, provides a spacious fit and reduces the need to "re-adjust"
    • Major stress-points are reinforced with bar tack stitches to make sure our products last
    • Mobility gusset allows for a greater range of motion and unrestricted movement
    • Durable seams that lay flat on your skin to minimize chafing
    • Easy care - machine wash cold and hang to dry - that's it
    • Microfiber and Mesh: 90% Polyester, 10% Spandex
    • Model is 5'11" ◦ 31" waist ◦ wearing a medium
    • Fit guide


    All of our garments are easy care:

    • Machine wash cold and hang to dry - that's it (this fabric is quick-drying)
    • Do not dry clean
    • Do not bleach
    • No ironing necessary, but if desired, dampen the fabric and use a steamer or set the iron to very low heat
    Customer Reviews
    4.9 Based on 22 Reviews
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    Filter Reviews:
    Ryan Y.
    United States United States
    I recommend this product
    Great fit and equally great customer service

    The fit on the Athletic boxer brief is exactly what I was hoping for. Not too loose, not too tight. I first ordered the standard fit but they were a little too snug around the thigh for my liking. Luckily the customer service here at All Citizens gave me a full refund and I was able to place an order for these athletic fit in no time!

    Eric H.
    United States United States
    I recommend this product
    Great fit, comfortable material.

    Great value and comfort overall. The fly is a bit odd, but at least they have one. Love them.

    Nicholas H.
    United States United States
    I recommend this product
    Fit well and don't ride up

    The fabric feels good and thigh fit is really good. I don't have to keep pulling them down my leg like I have to with other boxer briefs. Also very breathable.

    Kenton F.
    United States United States
    I recommend this product
    Fits perfect

    Daniel and his customer service are top notch. Willing to take ideas and reviews to make his product more awesome. Really enjoyed the online chats.

    Kody T.
    United States United States
    Most comfortable boxer briefs worn

    The elastic around the leg took some time to get used to, but these are the most comfortable briefs I've ever worn. Definitely think it's worth replacing all my other boxers in my wardrobe with.