YOUR FIRST PAIR 50% OFF

A WAISTBAND THAT STAYS FLAT

Wide, smooth and flat against you all day.

★★★★★ 4.86 from 21,830 reviews

GUYS WHO HAD THE SAME PROBLEM

★★★★★

“These underwear are amazing. They are incredibly comfortable, the waistband stays put, and best of all, no chafing or awkward adjustments, which always happen in the wrong place at the wrong time. Sometimes I forget that I am wearing anything at all. The vertical fly is also great for whenever access is needed. I’m definitely a fan, and will be ordering more.”

Brian L., verified buyer · Pinatubo Boxer Briefs - 5"

★★★★★

“I went on a short journey of finding the kast undies Ill ever own. I was 270lbs and due to terminal illness Im down to 170 and in sizes I never imagined. I tried a pair of saxx and meundies also and where the meundies were terribly comfortable, I was aware they were comfortable all day. My Krakatoa just felt like nothing. Like there was an invisible angel cradling the boys all day long. The waistband doesnt roll and the pouch is just right to keep you supported all day.”

Charles S., verified buyer · Pinatubo Boxer Briefs - 5"

★★★★★

“These Krakatoa boxer briefs are far and away the best underwear I’ve ever owned. I’m a pretty big guy and have always had an issue with underwear wastebands rolling - even with other “premium” underwear brands. Krakatoas are different - they’re thin and comfy, keep my junk in place, and most importantly the wastebands have never rolled. Outstanding!”

Robert M., verified buyer · Pinatubo Boxer Briefs - 5"
PInatubo Seamless Boxer Brief in Jet Black - Front
1/8
  • PInatubo Seamless Boxer Brief in Jet Black - Front
  • Pinatubo Sports Boxer Back View
  • Pinatubo Sports Boxer inside-out showing front view
  • Pinatubo Boxer Brief inside-out showing pouch
  • Pinatubo Boxer Brief inside-out showing printed washing label
  • Pinatubo Boxer Brief inside-out showing seamless hems
  • Yellow tennis ball in a white pocket with text overlay on a gray background
  • Video showing pinatubo's pouch
Pinatubo Boxer Briefs - 5"

647 reviews

Pinatubo Boxer Briefs - 5"

$34 $17 your first pair, with the signup below

Nothing ruins a day like a waistband folding over itself.

Keep your first pair, no returns needed. Wrong fit? Store credit for a new size.

139,000+ guys · ★ 4.86 from 21,830 reviews

  • 5” Inseam
  • Horizontal Fly
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
Front:
Length:
Color Jet Black
Size

87% say true to size (231 reviewers who rated the fit; 7% small, 5% large)

Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

Shipping
$5 flat rate shipping in the USA when you subscribe to our newsletter as a new customer.

1 Year Warranty
We provide a 1 Year Warranty from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect from 1 year of purchase, we'll replace them for just the cost of shipping. Full details can be found HERE.

Prefer a different style? See every style
Black boxer briefs with a patterned waistband on a white background
1/9
  • Black boxer briefs with a patterned waistband on a white background
  • Anti-Gravity Trunk Back View
  • Anti-Gravity Trunks inside-out showing front view
  • Lava Red Anti-Gravity Trunks inside-out showing Pouch Close-up
  • Anti-Gravity Trunks inside-out showing printed washing label
  • Anti-Gravity Trunks inside-out showing seamless hems
  • Red underwear with a yellow tennis ball inside, black waistband with white text.
  • Video of Anti-Gravity's Pouch
  • Anti-Gravity Trunks overview video
Anti-Gravity Trunks - 1.5"

117 reviews

Anti-Gravity Trunks - 1.5"

$32 $16 your first pair, with the signup below

Nothing ruins a day like a waistband folding over itself.

Keep your first pair, no returns needed. Wrong fit? Store credit for a new size.

139,000+ guys · ★ 4.86 from 21,830 reviews

  • 1.5” Inseam
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
Front:
Length:
Color Pure Black
Size

87% say true to size (231 reviewers who rated the fit; 7% small, 5% large)

Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

Shipping
$5 flat rate shipping in the USA when you subscribe to our newsletter as a new customer.

1 Year Warranty
We provide a 1 Year Warranty from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect from 1 year of purchase, we'll replace them for just the cost of shipping. Full details can be found HERE.

Prefer a different style? See every style
Black men's boxer brief featuring a contoured single layer Pouch with no fly, patterned waistband, seamless hems and a 5" inseam. Front Image.
1/10
  • Black men's boxer brief featuring a contoured single layer Pouch with no fly, patterned waistband, seamless hems and a 5" inseam. Front Image.
  • Anti-Gravity Sports Boxer Back View
  • Anti-Gravity Sports Boxer inside-out showing front view
  • Close-up of Anti-Gravity Boxer Brief's pouch
  • Close-up of Anti-Gravity Boxer Brief's washing label
  • Anti-Gravity Boxer Briefs inside-out showing seamless hems
  • Red underwear with a yellow tennis ball inside, black waistband with white text.
  • model wearing red sport
  • Video of Anti-Gravity's Pouch
  • Video of Alex giving an overview of the Anti-Gravity Boxer Brief
Anti-Gravity Boxer Briefs - 5"

229 reviews

Anti-Gravity Boxer Briefs - 5"

$34 $17 your first pair, with the signup below

Nothing ruins a day like a waistband folding over itself.

Keep your first pair, no returns needed. Wrong fit? Store credit for a new size.

139,000+ guys · ★ 4.86 from 21,830 reviews

  • 5” Inseam
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
Front:
Length:
Color Pure Black
Size

87% say true to size (231 reviewers who rated the fit; 7% small, 5% large)

Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

Shipping
$5 flat rate shipping in the USA when you subscribe to our newsletter as a new customer.

1 Year Warranty
We provide a 1 Year Warranty from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect from 1 year of purchase, we'll replace them for just the cost of shipping. Full details can be found HERE.

Prefer a different style? See every style
Black boxer briefs with text detailing features on a white background
1/9
  • Black boxer briefs with text detailing features on a white background
  • Anti-Gravity Boxer Brief Back View
  • Anti-Gravity Boxer Brief inside-out showing front view
  • Close-up of Anti-Gravity Boxer Brief's pouch
  • Close-up of Anti-Gravity Boxer Brief's washing label
  • Anti-Gravity Boxer Briefs inside-out showing seamless hems
  • Red underwear with a yellow tennis ball inside, black waistband with white text.
  • Video of Anti-Gravity's Pouch
  • Video of Alex giving an overview of the Anti-Gravity Boxer Brief
Anti-Gravity Boxer Briefs - 7"

164 reviews

Anti-Gravity Boxer Briefs - 7"

$34 $17 your first pair, with the signup below

Nothing ruins a day like a waistband folding over itself.

Keep your first pair, no returns needed. Wrong fit? Store credit for a new size.

139,000+ guys · ★ 4.86 from 21,830 reviews

  • 7” Inseam
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
Front:
Length:
Color Pure Black
Size

87% say true to size (231 reviewers who rated the fit; 7% small, 5% large)

Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

Shipping
$5 flat rate shipping in the USA when you subscribe to our newsletter as a new customer.

1 Year Warranty
We provide a 1 Year Warranty from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect from 1 year of purchase, we'll replace them for just the cost of shipping. Full details can be found HERE.

Prefer a different style? See every style
Pinatubo Seamless Trunk in Jet Black - Front
1/9
  • Pinatubo Seamless Trunk in Jet Black - Front
  • Pinatubo Trunk Back View
  • PInatubo Seamless Trunk on its side
  • Pinatubo Trunk inside-out showing front view
  • Pinatubo Trunk inside-out showing pouch
  • Pinatubo Trunks inside-out showing printed washing label
  • Pinatubo Trunk inside-out showing seamless hems
  • Yellow tennis ball in a white pocket with text overlay on a gray background
  • Video showing pinatubo's pouch
Pinatubo Trunks - 1.5"

252 reviews

Pinatubo Trunks - 1.5"

$32 $16 your first pair, with the signup below

Nothing ruins a day like a waistband folding over itself.

Keep your first pair, no returns needed. Wrong fit? Store credit for a new size.

139,000+ guys · ★ 4.86 from 21,830 reviews

  • 1.5” Inseam
  • Horizontal Fly
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
Front:
Length:
Color Jet Black
Size

87% say true to size (231 reviewers who rated the fit; 7% small, 5% large)

Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

Shipping
$5 flat rate shipping in the USA when you subscribe to our newsletter as a new customer.

1 Year Warranty
We provide a 1 Year Warranty from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect from 1 year of purchase, we'll replace them for just the cost of shipping. Full details can be found HERE.

Prefer a different style? See every style
Pinatubo seamless boxer briefs in jet black 7"
1/9
  • Pinatubo seamless boxer briefs in jet black 7"
  • Pinatubo Boxer Brief Back View
  • Pinatubo Boxer Briefs inside-out showing front view
  • Pinatubo Boxer Brief inside-out showing pouch
  • Pinatubo Boxer Brief inside-out showing printed washing label
  • Pinatubo Boxer Brief inside-out showing seamless hems
  • Yellow tennis ball in a white pocket with text overlay on a gray background
  • Video showing pinatubo's pouch
  • Video of Alex giving an overview of the Pinatubo Boxer Brief
Pinatubo Boxer Briefs - 7"

581 reviews

Pinatubo Boxer Briefs - 7"

$34 $17 your first pair, with the signup below

Nothing ruins a day like a waistband folding over itself.

Keep your first pair, no returns needed. Wrong fit? Store credit for a new size.

139,000+ guys · ★ 4.86 from 21,830 reviews

  • 7” Inseam
  • Horizontal Fly
  • 3” Deep Double Lined Pouch
  • 95% MicroModal / 5% Elastane
  • Seamless Leg Hems
Front:
Length:
Color Jet Black
Size

87% say true to size (231 reviewers who rated the fit; 7% small, 5% large)

Krakatoa First Pair Guarantee
Wrong fit on your first pair? No returns needed.
We’ll credit you the full retail value toward a new size - just cover shipping.

Shipping
$5 flat rate shipping in the USA when you subscribe to our newsletter as a new customer.

1 Year Warranty
We provide a 1 Year Warranty from the date of purchase. If your item has any structural damage resulting from a manufacturer's defect from 1 year of purchase, we'll replace them for just the cost of shipping. Full details can be found HERE.

Prefer a different style? See every style
micromodal v. cotton macro photo comparison

THE FINEST MICROMODAL FABRIC
Exceptional Softness and Breathability.

No synthetics here -and no PFAS.

Feel softness like never before with an ultra-premium, hand selected 95% MicroModal fabric. We source only the best Tencel MicroModal because comfort is our #1 goal. (Learn about MicroModal). We just add 5% of Spandex to allow for it to move with you.

We never skimp on the quality of our fabrics and materials, neither on the craftsmanship. These products go on your softest, most sensitive parts. We won't settle for anything less than the very best.

OUR PROMISE TO YOU

Keep your first pair, no returns needed.

If the fit isn't 100% right, we'll give you store credit for the full retail value of the product toward a new size—you just cover standard shipping.
CUSTOMER FEEDBACK

What Customers Love Most

Click any feature or keyword to explore real customer feedback!

Analyzing detailed customer feedback...

Watch Alex, tell you about our 4 different pouches.

KRAKATOA VS. OTHER BRANDS

Features Krakatoa Other Brands
Premium Materials
No-roll Waistband
365-Day Warranty
Multiple Pouch Options
1st Fit Guarantee
Immediate Store Credit Have to return the product
1st Pair Discount
50% OFF 20% or Less
1st Order Shipping
$5 Flat Rate

Hear straight from our customers:

We make underwear so good guys tell us why they love them.
Close up of Vesuvius with inverted fly in Hana Green

A Pouch without Gimmicks

The Room You Deserve

I spent 59 years thinking underwear didn't matter.
Krakatoa proved me wrong.
It’s like stepping out of a Ford Pinto and into a brand-new Bentley. The pouch is a game-changer—no more sticking, just silky softness.
Don’t wait as long as I did.

 Grab the Bentley of Underwear

Wide, slick, smooth, and lies flat -always.

A Waistband Above the Rest

I’m the most reluctant person on Earth to believe ads, but I bit the bullet on Krakatoa because of one claim: the waistband doesn’t fold. Two weeks in, and not a single pair has folded yet. It’s remarkable. They were right about the fit, the feel, and everything else. Don't hesitate.
These are truly the best on Earth.

 Upgrade to a Waistband that Stays

So thin you'll forget you're wearing them.

The 5-Star Hotel of Comfort

I’m always looking for the best gear for my boyfriend, and I finally hit the jackpot.
He loves smooth, soft underwear with real support, and he says these are the best ones yet. They’re the 5-star hotel of underwear.
Worth every penny for the comfort alone.

 Book a 5-Star Retreat for the Family Jewels
Blue boxer briefs with a brand logo on a white background

The only fly I'll use moving forward.

Game-Changing Fly Design

I spent years in the Navy searching the globe for the softest underwear.
My search ended with Krakatoa.
The material is elite, the horizontal fly is a game-changer, and I’m a customer for life.
Simply the best damn underwear I’ve ever owned.

 Stop your Search, Try the Best