Castelli Iride Seamless Base Layer - Long-Sleeve

Priced: $89.95 Rated:   - 5 stars out of 5 by 4 reviews.
Castelli Iride Seamless Base Layer - Long-Sleeve
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Color: Black
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Castelli Iride Seamless Base Layer - Long-Sleeve -

The foundation of any winter wardrobe, a base layer keeps your core warm by wicking moisture away from your skin. Thanks to new state-of-the art seamless knitting technology and a moisture-wicking blend of polypropylene, nylon, and lycra, the Castelli Iride Seamless Long Sleeve Base Layer is the company’s softest and most comfortable base layer to date.

Polypropylene is a popular choice for performance base layers as the fabric’s fibers quickly transport moisture away from your skin. Once the moisture has reached this point, the Iride’s nylon layer takes over, transferring the moisture outward to the surface of the garment to evaporate there, keeping you warm and dry. The Iride is also cut long at the waist to keep the base layer from riding up and out of your bibs.

The Castelli Iride Seamless Long Sleeve Base Layer is available in Black and comes in three sizes -- Small/Medium, Large/X-Large, and XX-Large. Like most Castelli clothing, the Iride base layer is designed to be form-fitting as the technical fabrics used to construct the garment work best when in close contact with your body. Be sure to check the sizing chart to ensure proper fit.


  • Seamless knitting technology prevents irritation
  • Polypropylene fibers transport moisture away from the skin to your outer garment
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Castelli Iride Seamless Base Layer - Long-Sleeve Reviews:

Positive Reviews:

Firstly let me say I'm fussy. And I don't mind spending money on something that works. But it better work.
Castelli never let's me down. I love this brand.
This garment (I bought 2 this season to add to the 2 I bought 2 years ago) is excellent. It's surprisingly warm. As MSA1288 said, I wear it under a thermal jacket and I'm good to go for a frosty morning. I wear it running and cycling.
I am castelli buyer now. They just make good stuff. Buy a size bigger than you normally do - and it'll fit like you always dreamed of - maybe even better.
I have these and the castelli long thermal bib knicks, short bib knicks and the short knicks. Man I just love their clothes. Now I don't mind winter at all. The clothes made me enjoy it.

det4551972 at on 06/19/2012

I purchased this three weeks ago just in time for nasty weather two consecutive weeks in a row. This works great under a thermal jacket or any jacket, and even under loosely fitted jerseys. It kept me warm on chilly days (40F to 55F) and wicks moisture like no other. As for the fit, I am 5'5", 160lbs with a 30" waist and a 38" chest, I got the small/medium size. Yes it is tight, but not uncomfortable, it's made to hug the body especially in the riding position. If it fits too loosley it will not provide you any warmth on those cold rides and its moisture wicking capability will go down.

MSA1288 at on 04/27/2012

Worth every penny.

jimp22555 at on 11/01/2012

Neutral Reviews:

runs real small. i got an xxl. ok for underneath layer. im 5-11 and 175 athletic somewhat muscular build. wanted to use it as a 2nd layer. if ur a 150 lb. rider it will problay work but.....3 star for size alone , otherwise ok

paul t at on 12/17/2011