This product has a 4.5 out of 5 rating as of this posting.
From the manufacturer
Under Armour’s mission is to make all athletes better through passion, design and the relentless pursuit of innovation
Where we started? It all started with an idea to build a superior T-shirt
The technology behind Under Armour’s diverse product assortment for men, women and youth is complex, but the program for reaping the benefits is simple: wear HeatGear when it’s hot, ColdGear when it’s cold, and AllSeasonGear between the extremes.
Warning: This product can expose you to chemicals including chromium (hexavalent compounds), which is known in the State of California to cause cancer and birth defects or other reproductive harm.