The BASED Boxer Brief

The BASED Boxer Brief

 4.7 | 5210 Reviews
USA Flag Proud USA brand

From clock-in to clock-out, these boxers have your back (and everything else).

 
Made for guys who work on their feet all day

check_circle Stay dry and comfortable all shift

check_circle No chafing, no riding up

check_circle Built to survive the job site

check_circle 1-Year No-Hole Guarantee

BASED is trusted by over 500k+ Men

60-Day Fit Guarantee 60-Day Fit Guarantee Free US Returns & Exchanges.
Free Shipping Over $50 Free Shipping Over $50 Arrives in 4-7 Business Days.

Check the waist on his (or your) jeans. It's on the tag.

Thick thighs or between two sizes? Go one size up. Still wrong? The first swap is free.

What it’s made of

  • Fabric: soft, matte, quick-dry jersey (nylon / elastane). Doesn’t hold sweat, doesn’t feel like a plastic bag.

  • Mesh zones: laser-perforated at the groin, the small of the back and the side of the thigh.

  • Leg: longer cut, ends just above the knee. Flat bonded band at the hem, no rubber grip.

  • Inner thigh: no seam where your thighs rub.

  • Pouch: roomy, lined with soft TENCEL™ lyocell. Keeps the boys off your thighs. Support, not a squeeze. No fly.

  • Crotch: double-layer gusset with reinforced stitching.

  • Waistband: 1.5" soft band that doesn’t roll.

  • Care: machine wash cold, tumble dry low or hang dry.

One year, no holes. If the crotch blows out or the waistband dies within a year, we replace the pair. No photos, no back-and-forth.

60-day money-back. Wear them on the job. If they're not drier and more comfortable than your old pairs, send them back and we refund you.

Free size swap and free returns on every US order. Email support@basedguys.com with your order number.

Contact us at support@basedguys.com.

Delivery times :
– United States & Canada: 4 – 7 business days
– Rest of the world: 7 – 12 business days

Tracking: A tracking number is sent by email as soon as your order ships.

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See what Others are saying

500,000+ Pairs Sold - 4.7/5 Average Rating

  • "On my knees on a roof 10 hrs a day and they dont ride up. And theres room for the boys, without squeezing em"

    Dave T. - Roofer

  • "3xl with big thighs and every brand rolls up or rips in the crotch in a few months. walking 8 miles a shift and these stay put"

    Travis P. - Warehouse

  • "Bought these for my husband bc he would never buy underwear for himself lol. he gets home and crashes on the couch in them every night before the shower, and the couch doesnt smell like a locker room anymore"

    Marie - Housewife

  • "usually blow out the crotch in like 2 months crawling under trucks. going on 5 months now, no holes"

    Derek S. -  Diesel mechanic

    Soaked by 10. Riding up by lunch. Raw by the drive home.

    YOU BLAMED YOUR AGE. YOUR WEIGHT. YOUR JOB...

    It's none of those.

    It's the one thing you pull on every shift without a second thought — and keep pressed against your body 16 hours a day on the roof or the construction site.

    IT'S YOUR UNDERWEAR.

    Skinny guys get it. Big guys get it. First-year apprentices and 30-year foremen get it. It's not you. It's what you're wearing.

    • THE REAL REASON ↓

    Your underwear was cut for a guy who sits at a desk.

    Regular boxer briefs are made for an office chair. Put them on a guy who walks 15,000 steps, kneels, climbs and sweats for ten hours, and...

    • THEY SOAK IT UP

      Cotton holds sweat and never dries. By noon you're wearing a wet rag.

    • THEY RIDE UP

      Short legs climb with every squat and every ladder. You spend the day pulling them back down.

    • THEY FALL APART

      The crotch wears through in two months. Then you’re back at the store buying another pack.

    • THEY RUB YOU RAW

      Wet fabric, dried salt, skin on skin. By 5 PM every step burns.

      So we cut one for guys like you.

      What we changed ↓

      check_circle
      Mesh right where you sweat

      Ultra-high quality mesh technology, on the small of your back and the side of your thigh. 

      check_circle
      A longer leg that stays put

      Ends just above the knee, with a flat band at the hem. Squat, kneel, climb, get in and out of the truck 20 times. It doesn't move.

      check_circle
      Built to take a beating

      Regular boxers blow out in the crotch in two months, and you’re back buying another pack. Ours have a reinforced double-layer crotch and a tougher knit that doesn’t wear thin. Guaranteed a year, or we replace them.

      check_circle
      No more chafing

      Thighs go raw from skin rubbing skin and wet fabric full of dried salt. The longer leg covers right where they rub and stays there, and the fabric dries out.

      BUILT TO LAST

      Built for years of shifts. Guaranteed for one.

      The crotch is where every pair dies. Ours has a double-layer gusset and reinforced stitching right where the store packs blow out in two months. 92% more durable than regular boxer briefs.

      1 YEARNo holes

      The Anti-Hole Guarantee

      If the crotch blows out or the waistband dies within a year, we replace the pair.

      What you're wearing now vs. BASED.

      Other brandsBamboo, cotton… BASED
      Per pair$25–36$12–19
      Dries fast✕✓
      Stays down✕✓
      Lasts2 months1 yr, guaranteed
      Up to 4XL✕✓
      Cut for your job✕✓

      WHY BASED

      Made by working men, for working men.

      We come from the trades. Roofing, framing, concrete & Texas summers.

      Every one of us knew the drill. Swamp ass by 10. Drawers riding up every time you bend over. Hopping in the truck after a morning in the attic and sitting in it like a wet rag. Thighs rubbed raw by the drive home. 

      Nobody was selling a solution. We are men of action, aren't we? So we made our own. 

      Now over 500,000 guys wear them to work. Guys like us.

      FIND YOUR SIZE

      60-Day Fit Guarantee

      No measuring tape, no guessing. Check the waist number on your jeans tag (the W) and find it in the chart. They fit true to size.

      • Big thighs? Go one size up. The leg is long, so your thighs decide.
      • No tag? Measure where your jeans sit, under the belly, not at the belly button.
      • Between two sizes? Size up.
      • Buying for him? Check the tag on his jeans. Same rule.

      Wrong size? The first swap is free. And you’ve got 60 days to send them back if they’re not for you. 

      FAQ

      They fits true to size. If you’re a medium, order a medium.

      Get the same size as the underwear he wears now. They fit true to size. Wrong size?

      Please refer to the size guide to get more details.

      You can also check the waist size on the tag of his jeans and match it on the size guide. Between two sizes or he’s got thick thighs? 

      If it’s still wrong, the first swap is free. And if he doesn’t like them, you have 60 days to send them back.

      Machine wash cold, with the rest of your laundry, work clothes included. Tumble dry low or hang dry. Skip the fabric softener, it clogs the mesh. That’s it, they’re built to take a beating.

      Yes. We go up to 4XL with real room in the thighs. Go by your jeans waist. Thick thighs? Go one size up. Wrong size? Your first swap is free.

      Sweat that sits in wet cotton all day is what smells. These dry out as you go, so it doesn’t sit there and go sour. Wash them like normal.

      No fly. No fly means no extra seam and no flap that rubs or gaps open when you squat.

      If you want to submit an idea for new boxer models we're open to discuss here: support@basedguys.com

      Try a pair. Hate it? Keep the whole pack — we'll still refund you. No risk, no return shipping, no catch.