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The Rukka Outlast Pants work to keep the wearer’s temperature not too hot... not too cold... but just right, over a broad range of environments and activity levels. When your activity level or the outside temperature increase, the Outlast thermocules that contain the phase-change paraffin begin to change from a solid to a liquid which provides you with a comfortable sensation of thermal equilibrium. The energy required to activate this process comes from your warm body or rising ambient temperatures.
When you begin to cool down, Outlast thermocules begin to change back from a liquid to a solid. In this phase change, the energy that was absorbed by the thermocules while you were active is returned to you.
Wore this undergarment everyday on a recent 3700 mile journey from Seattle to Rushmore at back, where the temperatures ranged from the low 40's to mid 80's. Worked really well on the hotter days and was substantial on the cold days but definitely needed to layer dress to keep really warm. All in all a comfortable effective garment.
October 7, 2014
Does Exactly as Advertised!
These pants are great! Does exactly as advertised. Keeps you warm when its cold and thin enough that it lets air circulates very well when its warm. When its too cold in the mornings and too hot in the afternoons for extra layers, you can fold it up into a little ball and put in your bag or whatever. Pants make it easier to pull on and pull off race leathers when you're hot and sweaty.
April 24, 2014
Comparable pricing to other choices
Willing to give the technology a chance. Went riding in 45F weather, no problem. Wore it to a football game at 28F, but was one of two layers. Runs slightly small compared to Rev It base layers.
December 2, 2013
Outlast pants....go with the flow
Great underlayer. I went through 6 states with various climates and not one problem. No issues with seams and great comfort.
October 2, 2013
My legs don't know what temperature it is outside.
I've used these pants under my Dainese Drake Air pants on three long distance rides now. First was DC to NYC which started out sweltering and ended in balmy evening weather. Second, back to DC starting in 50s and rain with rain suit over my riding gear and finishing in 60s. Third, 4 hours from low 70s to mid 80s and sunny. In each circumstance, no matter what the temp was outside, I was fine, not too hot or too cold. Also, on the DC - NY - DC trip, was wearing the Outlast shirt. Same deal. I think these work better than my other summer time base layer stuff from other manufacturers. I highly recommend due to Rukka's weird, Scandanavian magical temperature regulating properties. Obviously, they know what they're doing.
June 23, 2013
OK quality but wirth $69?
Bought it as Dainese WS pants were not available.
Fit is loose, maybe I am too skinny, and it makes my legs chilly even I was wearing leather pants.
My Under Armour winter inner pants works better...
February 20, 2013
Have a functionality, fit, or otherwise product-specific question about the Rukka Outlast Pants? Ask it here!
If you have a customer service or shipping question, please direct it to our Customer Service department.
John S:Pick the size that you normally use. I have a 37-38" waist and a 31.5 inseam and I purchased the large. They fit tightly around the waist and they are short on the leg as would be long underwear. HTHJan 7, 2014
Yvonne L:I purchased a pair for my boyfriend. CS@Revzilla suggested purchasing the same size as his underwear. He's a 33 inseam/32 waist and I got him a size M. The material is pretty stretchy.Jan 6, 2014