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Discontinued Product!

The Klim Aggressor Pants
has been replaced by the:
Klim Aggressor 1.0 Pants
Klim Aggressor 1.0 Pants Replacement Product:
Klim Aggressor 1.0 Pants
Out of Stock
Klim Aggressor Pants
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  • Klim Aggressor Pants - Black
  • Klim Aggressor Pants - Black

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MSRP
$42.99
Savings (20%):
$8.60
Price
$34.39

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Klim Aggressor Pants

KLIM’s Aggressor Pant matches the Aggressor Shirt perfectly in delivering premium base layer performance. Dress in the Aggressor Pant and you’ll experience more comfort in all temperatures thanks to the world’s best moisture-wicking, breathable, fast-drying and comfortable four-way next-to-skin stretch material. Comfort is now maximized by removing the in-seam seam for all-day riding happiness. New low-profile micro-cuffs at the ankle increase comfort and the high contrast stitching add a technical look. Whatever conditions you ride in, the Aggressor Series ensures you’ll be comfortable and dry ride-after-ride.

Features:

  • Contrast stitching
  • Low-profile ankle micro-cuffs enhance comfort and increase mobility
  • Patterning removes in-seam seam for ultimate riding comfort
  • Athletic contoured patterning
  • Anti-static comfort control
  • Breathable, moisture-wicking poly/Spandex fabric
  • Anti-microbial and fast-drying
  • Four-way stretch
  • Non-abrasive elastic comfort waist
  • Flat lock stitching
  • Tagless
  • Front fly

Bang For The Buck
4.3 / 5
Protection & Durability
4.3 / 5
Features
4.3 / 5
Comfort
4.7 / 5
Style
4.3 / 5

Klim Men's Base/Mid Layer Pant Sizing

Size Waist (in) Inseam (in)
XS 29 - 31 29
SM 32 - 34 30
MD 35 - 37 31
LG 38 - 40 32
XL 41 - 43 33
2XL 44 - 47 33
3XL 48 - 51 33

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How To Measure

W Waist Measure around your natural waistline, around the top of the hip bones, inline with the navel while keeping the measuring tape parallel to the ground.
I Inseam Measure from the highest point of your crotch down to your ankle, along your inner leg.
Product Style RevZilla Item # Manufacturer Product # Availability
Black / XS 842896 3357-003-110-000 Out of Stock
Black / SM 842897 3357-003-120-000 Out of Stock
Black / MD 842898 3357-003-130-000 Out of Stock
Black / LG 842899 3357-003-140-000 Out of Stock
Black / XL 842900 3357-003-150-000 Out of Stock
Black / 2XL 842901 3357-003-160-000 Out of Stock
Black / 3XL 842902 3357-003-170-000 Out of Stock

Shipping

Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.

Returns

If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

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5.0 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
12
0
0
0
0
Bang For The Buck
4.8 / 5
Protection & Durability
5.0 / 5
Features
4.9 / 5
Comfort
5.0 / 5
Style
5.0 / 5
Air Flow
4.8 / 5
Fit
Small
True
Large
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
great first layer pants
Revzilla reviews are spot on. these spandex type pants, designed to be the first layer you wear, are very comfortable and warm. KLIM has three (3) pants in this category and as advertised, these are the least warm. very comfortable, very snug as they fit to my body. because they are a snug fit, there is no bunching of material or discomfort in the crotch or seat area. i also read KLIM's sizing chart and i am glad i not only read it but trusted it. they fit like a glove. Revzilla had them on sale so i now have KLIM quality at a lesser brand price.<br>i would recommend this product without any hesitation.<br>i currently ride a '13 bmw r1200gsw
January 5, 2015
Ride:
2007 BMW R1200GS
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
4 / 5
Best tights for the buck
These tights offer moderate warmth and great comfort. They have a wide waist band that does not sag in the back and the fit in the crotch area does not bind. Great product for all day riding.
April 2, 2015
Bang For The Buck
5 / 5
Features
4 / 5
Comfort
5 / 5
Style
5 / 5
Nice buy
I get those pants to help me prevent skin irritation from my riding pants,<br>Pants are super comforted literally you don't feel them.<br><br>Recommended.
March 22, 2015
Ride:
2006 Yamaha YZF-R6
Bang For The Buck
5 / 5
Comfort
5 / 5
Style
5 / 5
Great cold weather undergarment
Well made, keeps you warm, does what you buy it for
August 1, 2014
Ride:
2007 BMW G650 Xchallenge
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Fit
Small
True
Large
Klim Aggressor Pants
I was preparing to ride to the Ohio Spyder Rally and temperatures were predicted to be cool, 40's and 50's. I ordered the Klim Aggressor Pants to wear under my riding gear as an extra layer. It proved to be all I hoped for. Very comfortable, fit was spot on, and it helped keep me warm, but still wicked away moisture and kept me dry, too. I rode over 1300 miles in five days, in cool, windy weather and stayed comfortable the whole time.
October 20, 2014
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
The ideal second skin
As I learned with the Aggressor briefs, the perfect base layer is the ideal companion. Makes long days on the bike WAY more comfortable. Their wicking properties in concert with that of an efficient mid layer (if needed) and a Goretex outer make for great comfort and ventilation.<br><br>Other than the fit being outstanding, there's little more to say about a product that simply and effectively facilitates comfort.
April 14, 2014
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
The fit and feel is great
These pants are much more superior and comfortable than traditional thermal underwear.The fit and feel is great!! I have worn these outdoors under jeans 2 hrs shoveling snown off porch,carport ,and driveway (10* to 20* with 15 to 25 mph wind gust) I stayed warm and comfortable,and at work for 8 hrs I did not get , over heated indoors,I stay dry and very comfortable ,when making transition from warm to cold, product worked really well. I have not had the opportunity to go riding with this product, because 2 winter storms hiting our area with in two weeks of each other (Sleet,snow,freezing rain). We had very hazardous road and highway conditions for almost a month . I live in southeast Missouri . I would buy this product again. Thanks Revzilla's for being a helping friend to a customer in need !!
April 5, 2015
Bang For The Buck
5 / 5
Protection & Durability
5 / 5
Features
5 / 5
Comfort
5 / 5
Style
5 / 5
Air Flow
5 / 5
Excellent price and Quality
At nearly half the price of other brands of technical undies, I'm definitely buying more. I wear a 34 so I got the SM and they have a compression fit. Waiting for spring to see how they breathe in warmer weather.
March 22, 2015
Bang For The Buck
5 / 5
Just What You Would Expect From Klim
These are very comfortable and fits easily under any top layer, including jeans. They seem very well made. A medium was a great fit for my 35 inch waist.
August 26, 2015
Ride:
2015 Triumph Tiger 800 XCX
Good balance, didn't retain to much heat but comfortable with knee braces
Finally wore out my Moose ones and these fit the bill. Only used for a couple short rides so can't comment on durability but seem like they should last.
May 18, 2015
Purchased
1 year ago
Ride:
2015 Yamaha WR250F
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Browse 7 questions Browse 7 questions and 47 answers
Why did you choose this?
RevZilla Store
Better than my old long johns!
AldoDL650 on Mar 8, 2016
Needed a good base layer. From the reviews and 100% satisfaction feedback score this seems to be a great solution at fair price.
BigDFury on Jan 13, 2016
Better than my old long johns!
AldoDL650 on Mar 8, 2016
needed a good base layer
Harold T on Jan 16, 2016
Needed a good base layer. From the reviews and 100% satisfaction feedback score this seems to be a great solution at fair price.
BigDFury on Jan 13, 2016
I chose these because after reading the reviews I thought these would provide protection against the cold. I was hoping they would keep me warm at least to 40 degrees outside. I've warn them on various rides but do not find them protective much below 50 degrees.
James D on Nov 17, 2015
Clearance price and great reviews as a base layer.
Robert M on Oct 28, 2015
Great price and you can't beat Klim products for quality and fit. I love my Badlands Pro Jacket and Latitude pants and Adventure gloves.
ADVRN on Oct 27, 2015
They fit and work. They do the job.
CrazyDave on Oct 18, 2015
Liner for Bandlands Pro pants.
Richard M on Aug 9, 2015
Comfort. Kim. No issues with extensive use!
Dan M on Apr 15, 2015
Looking for a good base layer that is not too outrageously priced as that is why I spent so much on a good quality adv. riding jacket. I believe Klim provides great value for money and doesn't sacrifice too much on quality. Besides, Klim is da bomb!!
Daniel G on Apr 9, 2015
Purchased as a gift for son-in-law who is an avid motorcycle rider, snowmobiler, and snowboarder who has always wanted Klim apparel.
Cindy K on Dec 13, 2014
warm and dry
Richard B on Nov 10, 2014
I'm about to go on a 1,000+ mile road trip and wanted some base layering since the weather is getting colder . . .
Daniel M on Oct 2, 2014
To try how these would work in early Spring and Late fall to keep warm under my Olympia Recon pants--will they keep me comfortable, not just temperature and moisture wicking-wise but to offset the "scratchy" feel of the pants on my skin.
S T on Sep 27, 2014
I hate seams on my riding pants...painful! No seems and need another layer under my riding pants with wind liner for colder riding.
Sabrina S on Sep 19, 2014
I DO HAVE THE BADLAND JACKET.
AND SO FAR I LIKE THE BRAND QUITE A LOT
EDUARDO S on Aug 11, 2014
"Brand reputation and customer reviews on wicking capability- needed for two week road trip"
Chris W on Jul 20, 2014
wanted to try them out
James R on Jul 3, 2014
Second set of the same pants and shirt (Klim Agressor) that i am getting.
Great quality. Used it for a 7500km trip and washed and re-used multiple times.
Good quality.
Would recommend.
Jashan S on Feb 6, 2014
needed a good base layer
Harold T on Jan 16, 2016
I chose these because after reading the reviews I thought these would provide protection against the cold. I was hoping they would keep me warm at least to 40 degrees outside. I've warn them on various rides but do not find them protective much below 50 degrees.
James D on Nov 17, 2015
What about a siziing chart for these?
David R on Sep 24, 2014
BEST ANSWER: I am 34 w 32 Inside and LG size is perfect
Is the Aggressor pant designed to be used with the Aggressor brief at the same time or is an either or kind of thing?
Phillip E on May 9, 2014
BEST ANSWER: It's an either or thing. The Aggressor pant is simply a long version of the brief. I can tell you they are really comfortable. I wear these under my riding pants and a Klim Aggressor long sleeve top under my jacket. The top looks good enough to remove your jacket without having to then put on a shirt when you stop to eat. These seem to let the right amount of air through as you're riding.
Are these wind resistant? Will I get cold if I use these under perforated pants (REV'IT! Airwave Pants) at 50°/55° F?
A S on Nov 6, 2014
BEST ANSWER: They will definitely help, but they don't seem to be designed to be wind resistant. I've ridden in 50-55F in perforated pants and these on, and have been fine some times, cold others. It really all depends on how fast you're going, how sweaty you are, and how much wind protection your bike offers.

I love these and wear them all the time, but I wouldn't recommend them if you're looking exclusively for wind protection. A rain membrane for your pants might be a better choice for that.
I want to order these but I'm not sure on sizing. any body have a good guess on size matching? i have a 30 waste. i'm guessing I'm a small, but not sure.
Jesse B on Aug 23, 2014
BEST ANSWER: I bought size L for a 36" waste so I would think that for a 30" the appropriate size would be XS.
Will the Klim Agressor Pants worn under Klim Mojave Pants be all that effective in 85+ degree days to help keep you from ""cooking" ? My concern is that I may be just adding another layer and actually increase the effective heat factor. The same question would be equally valid for the Agressor Shirt worn under a Badlands jacket. Thanks. Appreciate all responses.
Rick M on Jun 22, 2014
BEST ANSWER: I ordered this pair of pants to tryout under my BMW Street Guard 3 pants. I live here in Singapore/Malaysia and the temperatures are consistently between 25-34C (77-93F). While this pair of pants is not as warm as many others, I do find the material to be warming. It works OK in the 25C temperatures but is definitely "cooking" on the 34C temperatures. I have much better success in high temperatures with Saloman Trail Running Tights.
I have a 36w and a 33inseam. The medium looks like the right size for the waist but short for the inseam. Which size should I get?
Stephen R on Jul 8, 2015
BEST ANSWER: I wear a 36w and 32 inseam; I ordered medium and they are great and fit perfectly. Hope this helps.