The vendor's website just states that a "perforated microfiber" is used in the construction of the upper on the men's Under Armour Blue II FG. I would guess that this is some type of man made synthetic material, softer than plastic tho. The footbed is a patented Molded 4D Foam™:
Patented 4D Foam™ footbed conforms to your foot’s exact shape for a customized, locked-in fit and superior cushioned comfort.
And the bottom layer of the footbed uses UA’s Micro G® for added support and stabilization:
Super-responsive Micro G® foam cushioning turns cushioned landings into explosive takeoffs.
answered 1 year, 10 months ago
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