Under Armour took their iconic HeatGear(R) and built it with ground-breaking technology, NeoLast(TM)-their newest stretch tech that takes everything you know about compression and levels it up. It gives you that unreal flexibility to move however you need, then snaps right back so your fit stays locked in, for even longer. This is what the future of performance stretch feels like. Fit & Design: Fitted: Streamlined fit that's not too tight or too loose HeatGear(R) fabric is ultra-soft & smooth for extreme comfort with very little weight Material wicks sweat & dries really fast 4-way stretch material moves better in every direction Ergonomic design keeps seams off high abrasion areas & increases durability Mock neck collar for added coverage Odor control technology minimizes odor Technology: New, innovative NEOLAST(TM) fibers provide powerful stretch, durability, comfort & improved wicking Additional Details: NEOLAST(TM) is a high-performing alternative to elastane designed to begin addressing sustainability challenges associated with elastane