Can I wear the Hex under tights? Alessandro Babini December 06, 2018 16:47 Updated Follow Yes! As long as the Hex is in direct contact with the skin and positioned on the working muscle. Related articles How often should I wash the Hex? Endurance vs Interval vs Threshold mode How do I see the Hex data on my Garmin? Why is my SmO2 going up when I'm pushing hard during an exercise? What does the Hex measure? Comments 0 comments Article is closed for comments.