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Your quads and calves tend to get hot and sweaty while you run, so CW-X made the Men's Ventilator Tights with mesh panels in those two areas. These stretchy mesh panels are like built-in air conditioners for your legs, so you get less heat fatigue. CW-X included their patented Conditioning Web which supports the muscles and ligaments around the knee joint and offers support to both the medial and lateral head of the gastrocnemius in your calf. The UPF 40-rated fabric provides UVA and B protection while you run on fall and spring days.

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CW-X Ventilator Tight - Men's

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Here's what others have to say...

Im 5'6 and weigh about 77kgs fall just...

Im 5'6 and weigh about 77kgs fall just within the Small bracket. I read that it may not be wise to size up in this case. Also im a waist 33 (its not needed in the relation to the sizing, but generally use the waist measurement for a proper understanding). Needed a opinion to help purchase.

Best Answer Responded on

Hey Ricardo, I would say you are comfortably in the size small. I think if you size up these might end up being too large for you. Now nobody has the same body type and that is going to really play into factoring what size you need, I would honestly suggest following CW-X's suggestion first and if it doesn't fit then size up at that point.

5 5

Aids in recovery

Using these for my longer runs as I build up to running a trail marathon this year. After each run my legs feel far better than if I had just ran in shorts. The next day I feel better as well. These breath well however, you have to size them small to get all the benefits.
5'7"with a stocky frame and I wear a small.
I have also used them in a Spartan Super race in Nevada where I placed 7th. Absolutely will be buying more CW-X products.

Aids in recovery
5 5

Great for Backcountry touring

I have used the CW-X tights for downhill skiing for years, but found they were too warm for backcountry tours. Then I spied the Ventilator Tight and purchased them just before departing on a 7 day hut trip in the Valhalla range of the Selkirks. Combined with some Wool/polyester touring pants they worked great. Originally planning to use them for a few days and then rotate onto fresh Marino long johns, the tights were so comfortable that I ended up wearing them every day.

5 5


My husband has two pairs of these. They like to cycle and trail run with him and also are kind enough to act as a sunscreen against ferocious uV rays. They're also pretty tough. Gear doesn't usually have a long life in our house, but these have held up much longer than most. My husband uses these as a base layer under his bike/running shorts without a problem and swears they keep him cooler in the desert heat(along with the Craft Cool shirts). He pretty much won't leave home without them.

Unanswered Question

I've worn many tights before CW-X but none...

I've worn many tights before CW-X but none like these. Love them but..and here's the but...I'm a vertically-challenged runner and didn't realize ordering the "small" also relates to the height as well and unfortunately I fall below the 5''5" limit as indicated on tag. This was not spelled out in the order info.

So I'm wearing them anyway and what I'm experiencing is the knee pocket slides south by an inch or so to where they're suppose to be. Seem to feel ok... but is it ok?

Will this effect the performance of the compression hitting the right spots on the leg? If so, what's the remedy beside me eating my Wheaties and gaining a few more inches in my height.

Unanswered Question

What's the difference in support between...

What's the difference in support between these CW-X ventilator tights and the other CW-X tights OR SHORTS? (negligible?)

I'm thinking of wearing these year-round: summer(b/c I'm GUESSING the shorts do not provide as much support (calves?) + winter (with running pants over)).

Would it make more sense to purchase the CW-X shorts (for summer)AND wear compression socks, then buy warmer cw-x tights for the winter (instead of trying to get a universal product?)

I try to run inside in the winter and outside, b/4 sunup, in the summer (50-80 degF) so temperature isn't really a factor here that I'm aware of.


5 5

what's left to be said

Between these and my stabilyx I cannot wear any other tight ever again. These are lighter and still provide nice support.

My only thing with the cw-x tights is that I am 5'8' and 155 lbs-ish and find myself right in between small and medium. Both work, but the major difference between the two is that the medium has a larger waist which wasn't where I need the size differential (more in the quads area).

4 5

Saves the legs

I love these tights. Not cool enough for hot days but when it is not cold these work great. Also have the CW-X pro tights and I do find better recovery.

I train muay thai (kickboxing)... Would...

I train muay thai (kickboxing)... Would these tights fray or tear while kicking or kneeing pads..?

Responded on

If you kick as hard as JCVD in Bloodsport II yeah they'll probably fray within a training session or two. If you're more the Ralph Machio type you're probably safe. I'd stick to shorts but if you must these are really durable they'll certainly hold up as well or better than any other tight and they'll definitely make you look flashy during the Ram Muay or when doing spin kicks.

5 5

Super Hero Look !!!!!

This is my first CW-X product
I love these Ventilator tights. They keep your legs feeling fresh

I wish I had more than one pair - you miss them when you run in something else

4 5

Fantastic, helps with recovery

I got these for the warmer days and find that they are very helpful for the activity and also for recovery. I have found that using these for a couple days after a long run or ride it keeps the swelling down and the recovery is faster. It would be nice if it did not have the seam down the center of the crotch.

A few questions:

1) Other than the...

A few questions:

1) Other than the ventilation, what is the difference between the ventilator tights, the performX tights, and the stabilyx tights?
2) I'm 6'1", 175 lbs...typically too tall for medium and too skinny for large. Is medium the right size?
3) Do these tights provide sufficient support higher up the thighs or is it necessary to wear a pair of briefs under them?

Best Answer Responded on

I am of similar height and weight, and the CW-X medium size fits me very well. While I have no direct experience with the Ventilator tights, I do own three of their other tights. I find the sizing to be consistent among them, so I feel confident that the Ventilator will be sized similarly.

UPDATE: I recently bought a pair of the Ventilator, and the medium size fits me perfectly.

5 5

just right

Living in SoCal these are prefect. Great for year round training. Even did a race where it snowed and they still helped.Maybe not as much as the insulators but enough to finish strong. They fit like a second skin and really help keep your legs in a good position. Helps with fatigue and recovery. Wish I could afford to have a pair for everyday!

5 5

My first running tights

I had trained for the '08 Honolulu Marathon and had been stymied by some IT-band pain once I hit longer distances. I finished the marathon way slower than I intended because of this but spoke with another guy from my training group who swore by his compression tights. I did some poking around and CW-X seemed like they were the most targeted and came with good reviews. A month after the marathon I was back out out running 5 milers in the tights with zero IT stiffening, and a week after that ran a 14 miler, again with no IT-band issues. I live in Los Angeles so I will be interested to feel the heat dispersion when it warms up but these have actually kept me a bit warmer on those mornings where its been in the 50's. While I had a small amount of chafe in the beginning, it does not take away from my 5 star review. Simply put, for me, these tights have been completely effective and I won't be doing any long runs without them. Now I just need to find some ultra-lightweight shorts w/o built-in briefs to wear over them (hey, I'm a modest guy).

I am 6' tall, and weight 240, I have slender...

I am 6' tall, and weight 240, I have slender legs and a bigger top, what size would do the trick? Thanks

Responded on

I'd shoot for a large. Depending on your waist and inseam you may want to pick up a medium and large and return whichever one didn't work.

4 5

Better than shorts for long runs

I was getting sub-patellar knee pain after running. These tights stopped it as hoped. I run in Texas where it is usually hot, and they are comfortable- and, indeed, in the cold they are no help!

5 5

Great product!

These pants fit great, and really speed up my recovery time!

5 5

The best in its class

CW-X Ventilator tights integrated a design similar to Kinesio Taping method that gives major support to the muscles in the hamstring and knees. I've used this model in some very hot weather races and in cooler weather too, I highly recommend any product by CW-X they're a step above the rest.