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Rukka Cosmic Pants
  • Rukka Cosmic Pants - Black
  • Rukka Cosmic Pants - Black

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Video Reviews (3)

Rukka Cosmic Pants Videos

Rukka Cosmic Pants


  • Gore-Tex Pro 3-layer laminate with Armacor product technology
  • Armacor is a combination of high-tech fibers - aramid (Kevlar) and Cordura


  • Includes D3O Air protectors at the knees
  • Rukka D3O Air limb protectors meet the requirements of CE Norm prEN 1621-1 2010

Other Features:

  • Detachable OutLast liner with 60g insulation and Outlast thermal regulation
  • Outlast microcapsules absorb excess heat which is stored and released as needed
  • Trousers have a jacket connection zipper
  • Rukka AirCushion works as a climate buffer and reduces condensation
  • Rukka Antiglide System of Keprotec in seat area ensures a good grip and prevents sliding in the seat
  • Ventilation on thighs
  • Waist closure with double tightening
  • Four outside pockets and braces
  • The Rukka warranty is valid for 5 (five) years from the date of purchase against faults in material or workmanship.

Sizing Instructions

We highly recommend using a cloth tape measure to take the following measurements:

  • Chest:  Measure from under/top of armpit across chest to under/top of other armpit, then across back to first armpit
  • Waist: Measure at the hourglass of your torso, (circumference measured at your bellybutton).
  • Hips:  Measure the widest part of your hips below the waist, or pelvic bone to pelvic bone.
  • Outseam:  Measure from your waist, along the curve of your hip down to your heel.
  • Sleeve:  Measure the length from the back of your neck, over your shoulder and elbow, to your wrist bone.

Rukka Men's Pants Sizing

Rukka Size Waist (cm) Hips (cm) Inseam - Regular (cm) Inseam - Tall (cm) Inseam - Short (cm)
46 78-81 94-97 81 88 74
48 82-85 98-101 82 89 75
50 86-89 102-105 83 90 76
52 90-93 106-109 84 91 77
54 94-97 110-113 85 92 78
56 98-102 114-117 86 93 79
58 103-107 118-121 87 94 80
60 108-112 122-125 88 95 81
62 113-117 126-129 89 96 82
64 118-122 130-133 90 97 83
66 123-127 134-137 91 98 84

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

Click here to see the full Rukka Size Chart
Product Style RevZilla Item # Manufacturer Product # Availability
Black / 46 884333 77111-722-990-46-C2 In Stock: Ships within 24 hours
Black / 48 (Short) 884326 77111-722-990-48-C1 In Stock: Ships within 24 hours
Black / 48 884332 77111-722-990-48-C2 Out of Stock
Black / 48 (Tall) 884345 77111-722-990-48-C3 In Stock: Ships within 24 hours
Black / 50 (Short) 884325 77111-722-990-50-C1 In Stock: Ships within 24 hours
Black / 50 884342 77111-722-990-50-C2 In Stock: Ships within 24 hours
Black / 50 (Tall) 884334 77111-722-990-50-C3 In Stock: Ships within 24 hours
Black / 52 (Short) 884324 77111-722-990-52-C1 In Stock: Ships within 24 hours
Black / 52 884341 77111-722-990-52-C2 Out of Stock
Black / 52 (Tall) 884335 77111-722-990-52-C3 Out of Stock
Black / 54 (Short) 884323 77111-722-990-54-C1 Out of Stock
Black / 54 884340 77111-722-990-54-C2 In Stock: Ships within 24 hours
Black / 54 (Tall) 884343 77111-722-990-54-C3 Out of Stock
Black / 56 (Short) 884322 77111-722-990-56-C1 Out of Stock
Black / 56 884339 77111-722-990-56-C2 In Stock: Ships within 24 hours
Black / 58 884338 77111-722-990-58-C2 Out of Stock
Black / 60 884337 77111-722-990-60-C2 In Stock: Ships within 24 hours


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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.


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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Rukka Cosmic Pants 5 5 2 2
Great pants! These are great pants. My only negative comment is that the stretch parts lets the cold though more than the rest of the pants. So i get small cold spots just above my knees when riding in really cold weather. The comfort is great, and they keep me 100% dry. Small note on sizing: I'm wide and bulky built, 6"tall. And have rather short legs. A Rukka size 50 jacket gives me more than enough room for layers underneath. But when i got these, i needed a 52 to be comfortable around the thighs with anything more than boxers under. (To many squats? :# ) A size 52 short fits me perfectly snug, but comfortable. Seems to me that Rukkas pant sizes are comparable to Alpinestars, while jackets are bigger. #I have a Alpinestars set in 52/52, and those pants are just a hint tighter than my Rukkas.) Expensive yes, but some of the best you can get, and surely worth it for us that ride in the cold and wet. May 11, 2014
Fantastic Pants Just got these to go with my Rukka jacket. They fit great, are extremely comfortable and I love having the zippers on the legs so I can vent if I need to. I also like that to get the knee pads out for washing they are accessible from the outside which makes it easy for removal for cleaning. Glad a good dealer like Revzilla finally started to carry Rukka in the USA! September 4, 2013
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Have a functionality, fit, or otherwise product-specific question about the Rukka Cosmic Pants? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Rukka Cosmic Pants
Already Asked: 5 Questions, 8 Answers
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RevZilla Store asked: Why did you choose this?
Steve B: Reputation of the product (Rukka) and past experience with Revzilla. Nov 5, 2014
A. David B: They're waterproof. The quality is apparently pretty high. There are no zippers on the side which was important to me and of course, they appear to be very nice. Jan 15, 2014
Justin F asked: Wanting a pair of the Rukka cosmic's. I am concerned about size. The size chart indicates that the size 50 has up to a 34"waist ( right where I am at) and an inseam length of 32.7 inches. I normally wear a size 34-30 in most pants. The 50 or 52 Short from Rukka is at 30 " so off the bike should be better but I don't want them half-way up my boot when riding.

Can anyone roughly tell me if they run small or true to size and if anyone is about my size ( 34 waist 30"inseam) what size they are happy with? It is a tough product to research and there are almost no user reviews as Rukka has very limited distribution . Thanks
Aug 31, 2015
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Ben C: Justin:

I am also 34X30. I feel these pants run small. I purchased a pair of 52 regulars. They fit tight in the crotch and the length seemed fine, although it was about 2" long I felt it was OK. I wear a pair of Sidi Discovery boots. They were tight but comfortable to walk around in like a new pair of jeans, but I felt that after a long time in the saddle that tightness in the crotch would start to wear on me.

I sent them back and got a pair of 54 shorts. Those fit perfectly with room for layering. Tight but no where near what the 52 regulars felt like. Length was spot on standing and riding. I also noticed that the knee pads were perfectly over my knee.

In all honesty I have a big butt, so try the 52 short. 50 will likely be way too tight. If they are to tight send them back for the 54 shorts.

Hope this helps.
Aug 31, 2015
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A. David B: I'd go for the size 52. I have a 33/34 inch waist and my size 50 Cosmic pants are a snug fit. If you're a definite size 34, I'd order the 52's.


Aug 31, 2015
Reply to A. David Good answer? Yes (0) No (0)
Justin F: thanks.. I'm going to go with the 50. Ruck size chart indicates 33.9-35 in waist. I fluctuate a bit at the waist and if I have to cut back on the suds a bit it should work. I'm more concerned with the inseam but longer is better on a bike.. Aug 31, 2015
Juan Carlos V asked: Normal i wear a jeans 31 inseam I'm looking at the size chart and I m having problems choosing the right one I measured my out seam and I would be around 83 cm and my waist would be around 104 so I would be around a size 56 but the outseam on that size would be to big would That be the correct size or would they be to long? Dec 21, 2014
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A. David B: I wish I could be of assistance to you, but I have to be honest and tell you that I am not qualified to answer that question with any degree of accuracy.

I have a 31 inch inseam and a bit of a pot belly. I wear size 33 inch waist in my blue jeans and I bought the size 50 pants and they seem pretty darned good. If you're thinking size 56 pants, I would imagine that you're gonna want to get the short ones.

I don't know if that's of any value to you or not....

Dec 30, 2014
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Don L: I'm 6'1" 180 lbs and ordered the size 48 long, too tight and too long. I then ordered a regular size 50, still too tight. I can barely squat down. So now I'm going to try the size 52. Rezilla's suggestion on sizing is not correct. The quality is very good. IMHO, far better than Klim.

Joseph, the hip armor is included. I don't know about fitting over the Sidi Crossfires. But the bottoms seem fairly wide.
Apr 3, 2015
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joseph F asked: Can anyone confirm there's no hip armor? It's not listed in the info, but it seems kind of crazy Rukka wouldn't put hip armor in their "adv" style riding pants. I'd like to replace my Armas pants to go along with the Cosmic Jacket I have, but no hip protection is a deal breaker for me.
Also, can anyone confirm if these pants will zip closed over boots like Sidi Crossfires? I can't zip the Armas pant over them...
Jan 23, 2015
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Tom B: There is hip armor in the Cosmic pants.
RE sizing questions, I advise you to watch very carefully the videos Revzilla has posted. The sizing is pretty close to what they are saying, BUT if you're a bicyclist with massive quads... Forget it as the legs are meant to fit in a somewhat trim manner.

But In terms of length, remember that your legs are going to be bent while on a bike. If there's a question better to err on the long side vs the short side, IN MY OPINION. FWIW I'm only about 5'-8" or 5-9, but wear my regular trousers in a longish length- usually about a 32 inseam. I had a pair of Armaxions in a short length and felt they were too short when riding. The "regular" Rukka length is going to be suitable, most likely for anyone my height or maybe even slightly shorter. AFAIK there's a big difference between "short", "regular", and "long" sizes, maybe 3-4-5 inches between lengths? That's a total guess BUT the "short" length I felt was too short for me.
Apr 28, 2015
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Jim W asked: Can you wear these with motocross boots? My armas are just a little too tight with the clunky buckles Sep 30, 2014
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A. David B: I haven't tried these over motocross boots, but I suspect you'll have the same problem as with the Armas pants.

Sorry I couldn't offer you a more informed opinion...

Oct 2, 2014
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