Sweat-Friendly Shirt: Under Armour Tech Vented Shirt Another way to beat the heat? Under Armour's Tech Vented Shirt ($30), which is made with moisture-wicking fabric and has an airy keyhole in the back. Translation? It's the perfect match for a hot yoga class. Image Source: nordstrom.com Under Armour's Tech Vented Shirt $30 from nordstrom.com Buy Now