You do real work, you‘re going to sweat – a lot. Which means before you know it your t-shirt is sodden, clammy and stuck to your skin. Unless you’re smart enough to be wearing a 40 Grit Performance Sleeveless Tee. It’s a straightforward staple that does exactly what it's supposed to do: pull sweat away from skin and evaporate it in the wind, instead of absorbing like cotton would. That keeps you cooler, more comfortable. All for a fraction of what you’d pay for a high-brow athletic brand.