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I/O Bio Merino Track Jacket review
Written by Jason Elliot   
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I/O Bio Merino Track Jacket
images/I/O Bio Merino

A crisp and cold fall morning begs you to stretch your legs out on an inspired run. The humidity has decreased and the temperatures have dropped. Early morning runs can be cold and miserable. A little extra for a top layer may be needed to regulate your body heat.

The I/O Bio Merino Track Jacket solves the need for a light long sleeve top layer. The Track Jacket has a zip front and side pockets, high collar and cuffs with thumb loops.  I/O Bio Merino’s parent company is Mitchell Wool, a leader in sourcing Merino wool since 1870. And merino is the material in the Track Jacket (95% merino and 5% elastane).

Wool was a ‘four letter’ word for clothing fabric. Some still equate wool as itchy, scratchy and uncomfortable. Merino changes your opinion of how wool wears. The merino used in the Track Jacket is soft with a smooth feel. The jacket has stretch and can fit most torsos despite the size.

The flexibility in the fit is what is most impressive for the I/O Bio Merino Track Jacket. The quality of the merino wool is what makes it so flexible. According to the I/O Bio Merino web site, its the only company that quality controls the entire manufacturing process. The tight manufacturing standards show when you are pumping up a steeply graded trail. The Track Jacket stays in place and doesn’t ride-up.

I/O Bio Merino LogoThe I/O Bio Track Jacket can be your ‘go to’ top layer for cold fall morning runs. It’s available in two color schemes - black and blue. The Track Jacket carries a suggested retail price of $139.99.

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Jason Elliot

JElliotJason Elliot is the Editor and Publisher of Elliot has established a respected following with the top industry professionals and gearheads for his nonbiased reviews of outdoor gear and apparel. Elliot is a regular contributor to, and other publications on top of his editorial and writing role with

Elliot left a successful fifteen-plus year management career that he worked at Fortune 500 and S&P 500 companies to pursue his passion for writing about the outdoors. He holds a bachelor’s degree from Clarion University of Pennsylvania and a master’s degree from La Roche College.

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