Under Armour Base 4.0 Crew Mens Long Underwear Top | Wiki & Review | Everipedia

The Under Armour Base 4.0 Crew was built to battle nature's coldest and most brutal conditions. Its patented mega-grid fleece fabric traps heat to keep you ridiculously warm without feeling weighed down. It wicks away excess moisture in its unique grid channels, keeping you dry and comfortable allowing you to look forward to your next challenge. You can also move with unrestricted ease thanks to Under Armour's super-stretchy fabrication. As you face unbearably cold temperatures, you will be prepared and protected as you take on your next adventure with the Performance Under Armour Base 4.0 Crew. [+]