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Live and play in the I/O Biocompatibles Women’s Signature Track Pant, knowing that the natural, sustainable merino wool of this garment makes it (quite possibly) the most comfortable and functional pant you’ll ever wear. The high-quality merino wool fiber used in this I/O Bio merino pant is durable, heat and soil resistant, has natural odor-fighting properties, and provides warmth even when wet. Just because the Signature Track Pant is wool doesn’t automatically mean it’s itchy—this merino wool is exceptionally soft against your skin.

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I/O Bio Merino Signature Track Pant - Women's

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Here's what others have to say...

5 5

The ultimate in comfort, performance, and your butt will never look better!

These are the perfect pant, whether early morning yoga, taking a hike or walk with friends, or grabbing a cup of Joe in town. The warm and soft Merino wool will make you feel cozy and dry no mater where you decide to wear them and the little bit of spandex mixed into the merino give the pants that form fitting look no matter how many days in a row you wear them (and yes, once you put these baby's on you will have a hard time putting any other pant on). All and all these are the greatest do it all, wear sweats all day pant!

5 5


Bought these for my girlfriend. She loves them and lives in them. Warm, soft and sexy!!

5 5

I/O Bio Merino Signature Track Pant

I love these pants! They are amazingly flattering, soft, and comfortable. I wish all my lounge/yoga/sweat pants could be like these! I have the Signature Pocket Hoody as well and they make a great travel outfit.

What's the inseam length on these pants?

What's the inseam length on these pants?

Best Answer Responded on

I bought 2 pairs in is 29" inseam, another 29.5". CS says max. of 1/2" difference in manufacturing..won't be longer than that. Why do they make those pants so short?

5 5

hot to trot

Sleek, stylish, and warm track pants that are awesome for lounge wear as well as running, hiking, yoga etc. They are definitely great for cold days, but also regulate with your temperature so that you can use them for a wide variety of activities. Really soft and smooth against the body, they flow well and have a nice pocket feature for keys, cash etc. I am 5'8 and typically a size 6/medium, and the medium in these pants fit me perfectly.