• Person wearing black tactical pants on a gray background
  • Person wearing black tactical pants on a gray background
  • Close-up of black pants with a belt on a black background
  • Close-up of black pants with a brand logo on the waistband.
  • Close-up of black tactical pants with adjustable waistband and brand logo.
  • Close-up of black tactical pants with a brand logo on a gray background
  • Black tactical pants worn by a person on a gray background
  • Person wearing black pants with a plain background
  • Black tactical pants with a visible brand logo on a gray background
  • Person wearing black tactical pants with a magazine in a pocket on a gray background
  • Black tactical pants with a visible brand logo on a gray background
  • Black tactical pants on a gray background
  • Black tactical pants and boots on a light gray background
  • Person wearing black pants and shoes on a plain background
  • Man wearing black tactical outfit on a gray background
  • Man wearing a black tactical outfit with a cap on a gray background
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Op Assault Pant

Op Assault Pant

$209.00
$209.00 $209.00
★ 4.9
Waist
MEN'S SHOES MEN'S TOPS MEN'S BOTTOMS WOMEN'S SHOES WOMEN'S TOPS SPORTS BRAS WOMEN'S BOTTOMS WOMEN'S
OUTDOOR BOTTOMS MISSION PANT MISSION JACKET OP TOP / OP TOP PRO (S/S) OP TOP / OP TOP PRO (L/S) OP ASSAULT PANT
INCHES CM
U.S + CA MEN'S 8 8.5 9 9.5 10 10.5 11 11.5 12 13 14
UK MEN'S 7 7.5 8 8.5 9 9.5 10 10.5 11 12 13
EU MEN'S 41 41.5 42 42.5 43 44 44.5 45 45.5 47 48.5
U.S + CA WOMEN'S 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
UK WOMEN'S 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5
EU WOMEN'S 36 37 37.5 38 38.5 39.5 40 40.5 41.5 42 42.5 43 43.5
US/CA UK EU
8 7 41
8.5 7.5 42
9 8 42.5
9.5 8.5 43
10 9 44
10.5 9.5 44.5
11 10 45
11.5 10.5 45.5
12 11 46
13 12 47.5
14 13 48.5
SIZE SMALL MEDIUM LARGE X-LARGE 2XL 3XL
SLEEVE LENGTH 9 1/4” 23.5 cm 9 1/2” 24.1 cm 9 3/4” 24.8 cm 10” 25.4 cm 10 1/2” 26.7 cm 11” 27.9 cm
BODY LENGTH (FRONT) 28” 71.1 cm 29” 73.7 cm 30” 76.2 cm 31” 78.7 cm 32” 81.3 cm 33” 83.8 cm
CHEST WIDTH 20 3/4” 52.7 cm 21 3/4” 55.2 cm 22 3/4” 57.8 cm 23 3/4” 60.3 cm 24 3/4” 62.9 cm 25 3/4” 65.4 cm
BICEP WIDTH 6 1/2” 16.5 cm 6 3/4” 17.1 cm 7” 17.8 cm 7 1/4” 18.4 cm 7 1/2” 19.1 cm 7 3/4" 19.7 cm
SIZE SMALL MEDIUM LARGE X-LARGE 2XL 3XL
SLEEVE LENGTH 24 1/2” 62.2 cm 25” 63.5 cm 25 1/2” 64.8 cm 26” 66.0 cm 26 1/2” 67.3 cm 27” 68.6 cm
BODY LENGTH (FRONT) 28” 71.1 cm 29” 73.7 cm 30” 76.2 cm 31” 78.7 cm 32” 81.3 cm 33” 83.8 cm
CHEST WIDTH 20 3/4” 52.7 cm 21 3/4” 55.2 cm 22 3/4” 57.8 cm 23 3/4” 60.3 cm 24 3/4” 62.9 cm 25 3/4” 65.4 cm
BICEP WIDTH 7” 17.8 cm 7 1/2” 19.1 cm 8” 20.3 cm 8 1/2” 21.6 cm 9” 22.9 cm 9 1/2” 24.1 cm
MEASUREMENT 30 32 34 36 38 40 42
HIP 18 1/4” 46.4 cm 19 1/4” 48.9 cm 20 1/4” 51.4 cm 21 1/4” 53.9 cm 22 1/4” 56.5 cm 23 1/4” 59.0 cm 24 1/4” 61.6 cm
THIGH 11 1/4” 28.6 cm 12” 30.5 cm 12 3/4” 32.4 cm 13 1/2” 34.3 cm 14 1/4” 36.2 cm 15” 38.1 cm 15 3/4” 40.0 cm
KNEE 9” 22.9 cm 9 1/2” 24.1 cm 10” 25.4 cm 10 1/4” 26.0 cm 10 3/4” 27.3 cm 11” 27.9 cm 11 1/2” 29.2 cm
BOTTOM OPENING 8” 20.3 cm 8 1/4” 21.0 cm 8 1/2” 21.6 cm 8 3/4” 22.2 cm 9” 22.9 cm 9 1/4” 23.5 cm 9 1/2” 24.1 cm
INSEAMS 30" / 33" / 36” 76.2 cm / 83.8 cm / 91.4 cm 30" / 33" / 36” 76.2 cm / 83.8 cm / 91.4 cm 30" / 33" / 36” 76.2 cm / 83.8 cm / 91.4 cm 30" / 33" / 36” 76.2 cm / 83.8 cm / 91.4 cm 30" / 33" / 36” 76.2 cm / 83.8 cm / 91.4 cm 30" / 33" / 36” 76.2 cm / 83.8 cm / 91.4 cm 30" / 33" / 36” 76.2 cm / 83.8 cm / 91.4 cm
SIZE CHEST WAIST ARM LENGTH
XS 34-35" 86-89 cm 28-30 24-25
S 36-37" 91-94 cm 28-30 25-26
M 38-39" 97-99 cm 29-33 25-26
L 40-41" 102-104 cm 32-35 25-26
XL 42-43" 107-109 cm 34-37 26-27
XXL 44-46" 112-117 cm 36-39 26-27
3XL 47-49" 119-124 cm 40-43 26-27.5

MEASURING TIPS:

For the most accurate measurements, we suggest measuring as close to the skin as possible.

CHEST MEASUREMENT:

Wrap the measuring tape around the widest point of the chest starting at the front and center of your torso.

WAIST MEASUREMENT:

Measure around the body where the waistband of your pants normally sits.

ARM MEASUREMENT:

Measure from where the shoulder connects to the arm and down to wrist.

SIZE WAIST HIP THIGH INSEAM (SHORT) INSEAM (REG) INSEAM (TALL)
S 30 38.5-41.5" 98-105 cm 25.5-28" 65-71 cm 30 33 36
M 32 40.5-43.5" 103-110 cm 26.5-29" 67-74 cm 30 33 36
L 34 42.5-45.5" 108-116 cm 27.5-30" 70-76 cm 30 33 36
XL 36 44.5-47.5" 113-121 cm 28.5-31" 72-79 cm 30 33 36
2XL 38 46.5-49.5" 118-126 cm 29.5-32" 75-81 cm 30 33 36
3XL 40 48.5-51.5" 123-131 cm 30.5-33" 77-84 cm 30 33 36
4XL 42 50.5-53.5" 128-136 cm 31.5-34" 80-86 cm 30 33 36
5XL 44 52.5-55.5" 133-141 cm 32.5-35" 83-89 cm 30 33 36

MEASURING TIPS:

We have determined that your waist measurement will most likely dictate your size. Secondary to waist size, if you notice your thighs exceed the limit on our chart you may need to go up a size.

THIGH MEASUREMENT:

Measure around the widest area of the thigh.

HIP MEASUREMENT:

Measure around the largest area of your hips, encapsulating the roundest part of your gluteus.

U.S + CA WOMEN'S 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
UK WOMEN'S 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5
EU WOMEN'S 36 37 37.5 38 38.5 39.5 40 40.5 41.5 42 42.5 43 43.5
U.S + CA MEN'S 8 8.5 9 9.5 10 10.5 11 11.5 12 13 14
UK MEN'S 7 7.5 8 8.5 9 9.5 10 10.5 11 12 13
EU MEN'S 41 41.5 42 42.5 43 44 44.5 45 45.5 47 48.5
US/CA UK EU
5 2.5 35.5
5.5 3 36
6 3.5 36.5
6.5 4 37.5
7 4.5 38
7.5 5 38.5
8 5.5 39
8.5 6 40
9 6.5 40.5
9.5 7 41
10 7.5 42
10.5 8 42.5
11 8.5 43
SIZE CHEST WAIST ARM LENGTH
XS 28-31" 71-79 cm 24-27 20-22
S 30-33" 76-84 cm 27-30 21-23
M 34-36" 86-91 cm 30-33 22-24
L 37-39" 94-99 cm 33-35 23-25
XL 40-42" 102-107 cm 35-37 23-25
2XL 42-44" 107-112 cm 37-39 23-25
1X 44-47" 112-119 cm 40-42 23-25
2X 47-50" 119-127 cm 42-44 23-25
3X 51-54" 130-137 cm 44-46 23-25

MEASURING TIPS:

For the most accurate measurements, we suggest measuring as close to the skin as possible while wearing a non-padded, non-compression bra.

CHEST MEASUREMENT:

Wrap the measuring tape around the widest point of the chest starting at the front and center of the torso.

WAIST MEASUREMENT:

Measure around the body where the waistband of your pants normally sits.

SIZE 28 30 32 34 36 38 40 42 44 47
A XS XS S M L L XL - 1X 2X
B XS XS S M L XL XL - 1X 2X
C XS S S M L XL XL 2XL 1X 2X
D S S M M L XL 2XL 2XL 2X -
DD S S M L XL XL 2XL 1X 2X -
E - M M L XL 2XL 2XL 1X 2X 3X
F - - - - - - - 1X 2X 3X
G - - - - - - - 1X 2X 3X

MEASURE YOUR RIB CAGE:

Measure around your rib cage just under your bust. Round down to the closest inch. This is your rib cage measurement, which you’ll need to figure out your band and cup size.

FIGURE OUT YOUR BAND SIZE:

Take your rib cage measurement from step 1 and read across the chart below to find your band size.

SIZE BUST
XS 28-31" 71-79 cm
S 30-33" 76-84 cm
M 34-36" 86-91 cm
L 37-39" 94-99 cm
XL 40-42" 102-107 cm
2XL 42-44" 107-112 cm
1X 44-47" 112-119 cm
2X 47-50" 119-127 cm
3X 51-54" 130-137 cm

FIGURE OUT YOUR CUP SIZE - THIS IS A 2-STEP PROCESS:

First, measure around the fullest part of your bust. Keep the tape straight across your back. Round up to the nearest whole number. This is your bust measurement.

Now, subtract your rib cage measurement (step 1) from your bust measurement (step 3). The difference in inches is your suggested cup size. If you’re between sizes, round up.

BUST SIZE MINUS RIB CAGE SIZE YOUR CUP SIZE
3" 7.6 cm AA
4" 10.2 cm A
5" 12.7 cm B
6" 15.2 cm C
7" 17.8 cm D
8" 20.3 cm DD
9" 22.9 cm E

FIT GUIDELINES:

Every bra serves a different purpose for different activities and we recommend referencing each specific bra product description to determine the best bra for your body and sport. Our bras should generally fit snug. Wearing the bras too loose will not likely provide adequate support.

***Please note, a majority of our sports bras are medium support and medium coverage. If you are looking for the highest impact support that we offer; check out the X-Factor, Intensity or Moxie Sports Bra!

SIZE HIP THIGH WAIST
00-0 | XS 34-36" 86-91 cm 19-21" 48-53 cm 24-27" 61-69 cm
2-4 | S 36-38" 91-97 cm 21-23" 53-58 cm 27-30" 69-76 cm
4-6 | M 38-40" 97-102 cm 23-26" 58-66 cm 30-33" 76-84 cm
8-10 | L 40-43" 102-109 cm 26-28" 66-71 cm 33-35" 84-89 cm
10-12 | XL 43-46" 109-117 cm 28-30" 71-76 cm 35-37" 89-94 cm
14-16 | 2XL 47-50" 119-127 cm 31-33" 79-84 cm 37-39" 94-99 cm
18/20 | 1X 51-53" 130-135 cm 34-36" 86-91 cm 40-42" 102-107 cm
20/22 | 2X 54-56" 137-142 cm 37-39" 94-99 cm 42-44" 107-112 cm
24-26 | 3X 57-58" 145-147 cm 40-42" 102-107 cm 44.5-46" 113-117 cm

MEASURING TIPS:

We have determined that your waist measurement will most likely dictate your size. Right on the edge between two sizes? You can utilize your thigh and hip measurements as secondary guidelines to help you find the perfect size.

WAIST MEASUREMENT:

Measure around the smallest part of your torso, keeping the measuring tape as horizontal as possible.

THIGH MEASUREMENT:

Measure around widest area of the thigh.

HIP MEASUREMENT:

Measure around the largest area of your hips, encapsulating the roundest part of your gluteus.

SIZE WAIST HIP THIGH INSEAM (SHORT) INSEAM (REG) INSEAM (TALL)
0 25" 63.5 cm 35-38" 89-97 cm 21" 53 cm 29 32 35
2 26.5" 67.3 cm 36-39" 91-99 cm 22" 56 cm 29 32 35
4 28" 71.1 cm 37-40" 94-102 cm 23" 58 cm 29 32 35
6 29.5" 74.9 cm 38-41" 97-104 cm 24" 61 cm 29 32 35
8 31" 78.7 cm 39-42" 99-107 cm 25" 64 cm 29 32 35
10 32.5" 82.6 cm 40-43" 102-109 cm 26" 66 cm 29 32 35
12 34" 86.4 cm 41-44" 104-112 cm 27" 69 cm 29 32 35
14 35.5" 90.2 cm 42-45" 107-114 cm 28" 71 cm 29 32 35
SIZE SMALL MEDIUM LARGE X-LARGE 2XL 3XL
WAIST SIZE (ELASTIC) 14" (28-30) 35.56 cm 15” (31-33) 38.1 cm 16” (34-35) 40.64 cm 17” (36-37) 43.18 cm 18” (37-39) 45.72 cm 19” (40-32) 48.26 cm
HIP 19" 48.26 cm 20” 50.8 cm 21" 53.34 cm 22" 55.88 cm 23" 58.42 cm 24" 60.96 cm
THIGH 13 1/4” 33.65 cm 14” 35.56 cm 14 3/4” 37.46 cm 15 1/2” 39.37 cm 16 1/4” 41.27 cm 17” 43.18 cm
KNEE 10 3/8” 26.35 cm 10 3/4” 27.30 cm 11 1/8” 28.25 cm 11 1/2” 29.21 cm 11 7/8” 30.16 cm 12 1/4” 31.11 cm
BOTTOM OPENING 7 3/4” 19.68 cm 8" 20.32 cm 8 1/4” 20.95 cm 8 1/2” 21.59 cm 8 3/4” 22.22 cm 9” 22.86 cm
INSEAM 33 33 33 33 33 33 33 33 33 33 33 33
SIZE SMALL MEDIUM LARGE X-LARGE 2XL 3XL
SLEEVE LENGTH 27 1/2” 69.85 cm 28” 71.12 cm 28 1/2” 72.39 cm 29” 73.66 cm 29 1/2” 74.93 cm 30” 76.2 cm
BODY LENGTH (FRONT) 27 1/2” 69.85 cm 28 1/2” 72.39 cm 29 1/2”" 74.93 cm 30 1/2” 77.47 cm 31 1/2” 80.01 cm 32 1/2” 82.55 cm
BODY LENGTH (BACK) 29 1/2” 74.93 cm 30 1/2” 77.47 cm 31 1/2” 80.01 cm 32 1/2” 82.55 cm 33 1/2” 85.09 cm 34 1/2” 87.63 cm
CHEST WIDTH 23” 58.42 cm 24” 60.96 cm 25” 63.5 cm 26 1/2” 67.31 cm 28” 71.12 cm 29 1/2” 74.93 cm
SIZE CHART
Inseam

DESCRIPTION

Keep your tactical wear comfortable and reliable with the Born Primitive Op Assault Pant. Featuring abrasion-resistant stretch fabric and extra stretch panels at the back yoke and knees, these men's black tactical pants provide superior mobility. A reinforced two-ply seat, adjustable hook & loop tabs at the waist, and large belt loops for any size belt offer protection when you need it. With plenty of pockets for easy organization, these men's tactical pants keep you prepared for any mission.

FEATURES

- Body 1 94% nylon, 6% spandex
- Body 2 70% nylon, 20% polyester, 10% spandex
- Waistband Lining 90% polyester, 10% spandex
- Other 100% polyester
- Abrasion resistant stretch fabric w/ extra stretch
panels at seat and knees
- Large front pockets w/ mesh pocket bags & coin
pockets
- 2 ply knife reinforcements at the edge of front
pockets
- Large Low-Profile, zippered cargo pockets featuring:
- Bellowed Fabric to expand pockets -Drainage
holes to dump water/debris
- Inner elastic strap to secure large objects
(Water bottle / magazines)
- Small, zippered dip pockets at front legs
- Ballistic Nylon reinforced knees w/ stretch panels for
extra mobility
- Inner knee pad pockets w/ Velcro closure & drainage
holes to dump water/debris
- 2 Ply reinforced seat
- Large belt loops to support any size belt
- Adjustable velcro tabs at waist
- Gusseted crotch
- Zippered back welt pockets with mesh pocket bags
- Angled side ankle pockets (Zippered closure and
drainage holes)
- Weight: 690g, 1lb 8.32oz

PRODUCT CARE

'- Wash in cold
- Hang dry

SIZING RECOMMENDATIONS

Model Height: 5'11"
Model Weight: 220lbs
Pants: 34/33

DELIVERY & RETURNS

Delivery

Free standard shipping on orders over $150.

We also offer express shipping options. See prices at checkout.
- Next Day
- 2nd Day
- Expedited (2-4 Days)

Returns & Exchanges

- 30 Day Return Window
- Free Exchanges
- Free Returns for Store Credit
- Returns to original form of payment subject to $12 processing fee
- See our full Return Policy HERE

*Please note items marked "exchange only" are eligible for exchanges and store credit only. Final Sale items cannot be returned or exchanged.

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CUSTOMERS ALSO LOVE

4.9
Rated 4.9 out of 5 stars
Based on 661 reviews
FitRated 0.0 on a scale of minus 2 to 2
Review Summary
Customers say these tactical pants are incredibly comfortable and stretchy, offering excellent mobility for extended wear and demanding activities. The lightweight, breathable material performs well in various conditions without feeling restrictive. Practical pocket placement and reinforced knee areas are frequently praised. Many users report superior comfort compared to other tactical brands, with durable construction that holds up through regular use. Some note the sizing runs large, and a few mention the waistband texture or ankle adjustments could be improved.
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661 reviews
  • Patrick
    Reviewing
    Op Assault Pant (OD Green)
    I recommend this product
    Rated 5 out of 5 stars
    4 minutes ago
    5 Stars

    Awesome well made tactical pants

    Was this helpful?
  • Brian
    Reviewing
    Op Assault Pant (Black)
    I recommend this product
    Rated 5 out of 5 stars
    3 days ago
    5 Stars

    Perfect fit and function

    Was this helpful?
  • Eulogio c. j.
    Verified Buyer
    Reviewing
    Op Assault Pant (Desert Tan)
    I recommend this product
    Height 5'5" - 5'8"
    Activity Strength Training, Functional Training, Work
    Size 32
    Inseam 30
    Rated 5 out of 5 stars
    6 days ago
    Great pants.

    I’m usually a 34, these run big, 32 was perfect, pants are amazing, super comfortable, feel great, knee pads are added bonus! Definitely buying more colors.

    Was this helpful?
  • Brent p.
    Reviewing
    Op Assault Pant (Police Blue)
    I recommend this product
    Rated 4 out of 5 stars
    1 week ago
    .

    Great pants. My only complaint is no velcro or snap adjustment at the ankles. Then it would be 5 stars and beat crye.

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  • Anthony P.
    Verified Buyer
    Reviewing
    Op Assault Pant (OD Green)
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Awesome Pants

    I bought these pants with the V-Neck Long Sleeve shirt. Every guy on my Spec Ops teams has been asking me about them. The pants are comfortable and stretchy. They have plenty of pockets. I really like the Velcro to tighten or loosen the pants without needing a belt. They are the best combat/cargo pants I’ve ever owned.

    Was this helpful?