The inside of the fold out gives the product information. Under Armour believes this coldblack technology to be worth explaining, and does so. The use of greys is consistent with the front, although the white text over a fading background has varying levels of readability.
The inside features two pages, both French and English. Surely a cost-saving measure first and foremost, as otherwise the repeated language is a waste of space.
The reverse is more standard UA fare. The extra dark black stands in sharp contrast to the rest of the tag. Also, the deep blue size information just adds to the overall gloominess. The yellow “UA RUNNING” sticker on the, while out of place, at least is in the same area of the color sphere.