The current trend in high performance apparel is focused around lightweight materials, designed to make the player feel like they're wearing the least amount possible, thus decreasing drag and weight, making players faster. We've seen this technology implemented from Nike in their Flyknit material, and adidas who recently launched Primeknit, their proprietary lightweight knitted material.
Under Armor is throwing it's hat in the ring with their release of ClutchFit. Designed to feel like a "second skin" the UA ClutchFit wraps around the foot for superior support and a one of a kind feel. Under Armour put ClutchFit through rigorous testing to make sure it performed under the toughest conditions. The material was specially built so it would flex and respond when put under pressure, so you know you'll perform your best when the game's on the line.
Check out the video of UA's ClutchFit technology for more information, and stay tuned for more as Under Armour is just tapping the potential of their new material.