Carry Guide · No-Belt Carry

Concealed Carry Underwear for Men: Carry When Your Pants Can't Hold a Holster

Gym shorts and sweats can't anchor a belt holster. Holster boxer-briefs carry the pistol at your hip on their own, and a holster undershirt carries it under your arm.

Close-up of black Phantom boxer-briefs: the waistband above a stitched holster pocket with a snap strap

Leg day. Gym shorts, a drawstring, no belt loops. You clip the holster on anyway, and it sags when you bend over. So the gun rides in a bag on the floor, or it stays in the truck.

The shorts aren't the problem. Your holster never held the gun by itself. Your belt and a firm waistband did, and gym shorts have neither.

Concealed carry underwear for men fixes that by putting the holster in a snug compression layer that stays on your body without a belt.

It's what one commenter under a gym-carry video was after: "If I can avoid putting firearms in any bag, I would." One warning before you shop: the phrase covers three different products, and only two of them hold a gun.

Which carry underwear fits which day?

Start with what you're wearing, not with the holster. Here's how the three types line up with a normal week.

Product image in four panels: black Phantom boxer-briefs with a pistol in the hip holster under gym shorts, jeans, sweats and dress pants
From the product page: the same boxer-briefs under gym shorts, jeans, sweats and dress pants.
No belt loops

Gym shorts, sweats and joggers

Holster boxer-briefs. They hold the pistol on their own, so the shorts only have to cover it. Wear a loose tee untucked over the grip.

Side view of a man in a black V-neck holster shirt with mesh panels, a pistol seated in the pocket under his arm, hand on hip
A holster shirt: the pistol sits in the mesh panel under the arm.
Tucked shirt

Office days and button-downs

A tucked shirt covers nothing at the waist, so a gun at the hip will show. Move it up: a holster shirt goes under the dress shirt. In our view, a sport coat or an open overshirt does the most to hide the outline under the arm.

Man in a black Phantom holster tee, angled side view, hand on hip, a pistol grip showing at the top of the pocket under his arm
The holster tee carries the grip under the arm, where an open shirt covers it.
Hot days

Shorts and a T-shirt in summer

Heat leaves room for one loose layer, so pick one spot. Boxer-briefs put the pistol at your hip under an untucked tee. A holster tee puts it on your ribs, under a light button-up worn open.

Man in a black Phantom holster tee, side view, hand on his belt, a pistol grip showing at the top of the rib pocket
On the tee, the pistol rides on the ribs, well above the belt line.
Seated all day

Desk days and long drives

Sitting is where low carry pinches. One SmartCarry owner wrote that he found it "impossible to sit down or crouch" without the gun pushing into his crotch. The tee's page says it spreads the weight across your torso instead of digging into your waistband. If you sit most of the day, start there.

“A gun in a bag on the gym floor while youre focusing on working out is insane”
YouTube commenter @pistolero8989, July 2025, under a video on carrying in gym shorts · YouTube

Why won't a holster stay put in gym shorts?

Call it the borrowed waistband. A clip-on holster is only as steady as the pants it hangs from.

Black Phantom boxer-briefs laid flat with a pistol in the holster pocket at the waistband and a snap strap across it
  1. On gym-shorts days, the holster sags. It slides or tips on an elastic waist, so the gun leaves your body. Some carriers bring their own anchor. One commenter under a gym-carry video wrote: "I just wear a gun belt under the shorts with a regular iwb holster."
  2. Elastic gives the clip nothing to bite. An inside-the-waistband (IWB) holster hangs from a belt and a firm waistband. Elastic stretches and folds, so the clip has nothing stiff to grab. That's why the usual fixes add gear, like a second belt under the shorts, or move the gun into a bag.
  3. A coat on a curtain. Clipping a holster to gym shorts is like hanging a coat on a curtain. The hook is fine. The curtain isn't.
  4. So anchor the holster to your body. Holster boxer-briefs skip the pants. The holster is sewn into compression underwear that, in our view, grips your hips, so the outer layer only has to cover it. Phantom's pair has two identical surgical-grade elastic holsters, one on each side, in a 4-way stretch MicroPoly/Lycra blend with a 4 in inseam.
  5. The gun stays on you, if the fit is snug. The product page lists gym shorts, sweatpants, jeans and dress pants, with or without a belt. But our read is that the squeeze does the holding. A buyer of another brand's holster underwear wrote that "they run ridiculous large like two sizes larger and they don't hold my RM 380." Size by your waist, not by habit.
No belt, no clip

Phantom Carry Boxer-Briefs

The underwear is the holster: two sewn-in pockets that ride at your hips under whatever pants you wear.

  • Two identical holsters, one on each side, for a left- or right-hand draw
  • Spare slots for a magazine, documents or small essentials
  • Soft, breathable, moisture-wicking MicroPoly/Lycra that goes in the washing machine
  • Black, sizes S to 3XL

$39

Get the boxer-briefs

Soft elastic pockets, not a rigid holster. Made for deep concealment, not a fast draw.

What about a holster undershirt?

Close-up of a black V-neck holster shirt: a mesh side panel and the vertical pocket opening under the arm
The holster shirt's pocket opens under the arm, inside a mesh panel.

Upper-body carry

Same idea, higher up. An undershirt anchors the gun to your ribs instead of your hips.

Phantom makes two. The holster tee is a crew-neck compression shirt with a pocket under each arm. Its page says it holds the gun tight to the ribcage and spreads the weight across your torso.

The holster shirt is a compression base layer with padded pockets that close with hook-and-loop. Its page says the mesh panels break up the gun's outline and a shoulder yoke spreads the weight across your back. Both come in black or white, S to 3XL, at $59.

One limit: an undershirt needs a shirt over it. Boxer-briefs only need pants and an untucked tee.

How does underwear carry stack up against other no-belt options?

This is general guidance from product pages and carrier reports, not a lab test. Phantom makes the first two. The rest of the range is in our concealed carry clothing collection.

Method Where the gun rides Needs a belt? Watch for
Holster boxer-briefs At the hip, or at the front of the waist No Soft pocket, slower draw, grip needs a shirt over it
Holster tee or holster shirt On the ribs, under each arm No Needs a cover shirt, and it's one more layer in the heat
Groin holster worn inside the pants Low at the front, below the belt line No Owners report pressure when they sit or crouch
Belly band Wrapped around the waist No Adds a layer at the waist, so check that it stays put when you move
IWB belt holster Inside the waistband, clipped to a belt Yes Needs a sturdy belt and pants with a firm waistband
Padded carry underwear Holds no gun Worn with a belt holster Protects skin only, you still need the holster

Practice any new setup with an unloaded gun before you carry it.

At the hip or under the arm?

Line drawing of white boxer-briefs from the side and from behind, with a pistol in a holster pocket on each side and the heading 2 holsters, one on each side

Boxer-briefs: a holster on each hip

Man wearing a white Phantom holster tee, front view, with a black pistol in the pocket under each arm

Holster tee: a pocket under each arm

What long-time wearers of elastic-pocket holsters report

“i can honestly tell you that the retention hasn't changed a bit since purchasing it over a year ago!”
@ericpichler486 on YouTube, Sept 2013, carrying a compact SIG in UnderTech compression shorts (not a Phantom product) · YouTube
“I don't use full sized guns or guns without safety measures like a positive safety or a heavy DA trigger. I use a slim weapon or snub and it works great for deep concealment.”
@FlyingTigersKMT on YouTube, April 2013, a ThunderWear groin-holster user for over a decade (not a Phantom product) · YouTube
“If you're going to be around huggers, this is THE carry method in my experience. There is some discomfort when crouching or sitting leaning slightly forward that cause this to not be my primary carry method”
@Robnord1 on YouTube, June 2015, on the SmartCarry groin holster (not a Phantom product) · YouTube
“If you got a belly the elastic will keep flipping down.”
@AlmightyEvil1 on YouTube, Nov 2025, under a video on gym-shorts carry with belly bands · YouTube

Questions men ask before buying carry underwear

Which guns fit the Phantom boxer-briefs?

The page says they fit "1911s, Sig Sauer, Beretta & virtually every Glock." It lists the holster openings as 1.57 in (left) and 1.26 in (right) across, but no pocket depth. The long-time ThunderWear wearer above sticks to slim guns and snubs. If yours is on the big side, check it against the page or ask support before you order.

Is a soft pocket safe for a striker-fired pistol?

It's the right worry. Matthew Maruster's holster safety checklist calls sewn-in clothing holsters "really nothing more than a cloth pocket" and fails them unless "there is some hard material to reinforce the area encompassing the trigger guard." Phantom's page doesn't list a rigid insert.

If you carry in one, build three habits:

  • Check the empty pocket before you dress.
  • Keep fabric clear of the trigger guard.
  • Re-holster slowly, and practice first with an unloaded gun.
Will sweat rust the gun?

A YouTube commenter put it bluntly: "Gun will develop moisture from sweat and begin to rust." The page calls the fabric moisture-wicking, but the gun still rides against skin. Wipe it down after workouts and hot days, and empty the pockets before each wash.

Flat lay on concrete: black boxer-briefs and a black V-neck tee beside a vest, cargo pants, a first aid pouch and a pen

Carry on the days your belt stays home

Two built-in holsters, no belt, $39 a pair.

  • Best for: gym shorts, sweats, joggers and lazy days at home, under an untucked tee
  • Skip it for: a fast draw, a tucked dress shirt, or a waist over 52 in, the top of the 3XL range
  • Size by your waist: S 29 to 32 in, M 32 to 35, L 35 to 38, XL 38 to 43, 2XL 43 to 47, 3XL 47 to 52. The chart says size up if you're between sizes. Don't go bigger than that: the product page credits the snug fabric with keeping the gun in place.
  • Also part of The Entire Carry kit, with the vest, holster tee, pants, IFAK and pen
Pick your size

Phantom Tactic makes the boxer-briefs, holster tee and holster shirt mentioned in this guide.

Phantom Carry Boxer-Briefs $39 · Two built-in holsters, sizes S to 3XL
Get the boxer-briefs