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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has been replaced by the: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
  • Klim Aggressor Pants - Black
  • Klim Aggressor Pants - Black

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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.


  • 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

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


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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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Klim Aggressor Pants 4.9 5 17 17
Not your average long johns Picked these up on sale.. Very comfortable and doesn't absorb sweat and get cold like other long johns. Great not just on a motorcycle but also under my ski pants on a recent weekend ski trip. February 25, 2016
Exceeded all expectations!!! Great base layer! Klim products are high quality and always exceed my expectations. These pants are so versatile in many situations. I have worn them as a base layer in both summer and winter. They are very light weight but trap heat in the winter and wick away sweat in the summer. I wear them on and off the bike all the time. The pants run true to size using the on-line size chart. I am going to purchase several pair of these. They are great for trips as they pack very tight and do not take up much room. The fit is very comfortable and unlike some other brands I own they are not saggy anywhere. Used them the other day during a hike as well as in the gym. 100% satisfied and highly recommend. January 24, 2016
All you need Got these several weeks ago to put under my Klim Overlands. With the local season changes I have had the chance to use them in 80+ and 50+ temps and find they are functional and comfortable in both. Wash easily and dry quick. A little pricey but I expect they will make up for it in versatility. Fold tight too for travel. October 5, 2015
Great base layer. I used this product across the U.S. on a 6500 mile ride. The base layer was very comfortable in most temps. I would definitely buy this product again. September 7, 2015
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
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
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
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
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