I/O Bio Merino Long Sleeve Crew: The season is upon us which means it’s time to start thinking about how to protect ourselves from the bitter sweet cold. If the I/O Bio Merino Long Sleeve Crew is not at the top of your must-have list, you need to re-evaluate your priorities. With its versatile construction and fit the I/O Bio Merino Long Sleeve Crew can regulate and dominate as a base-layer as a stand-alone, basic crew.
96% I/O Merino
Slightly longer than regular tee
layer or stand-alone