While most of us sedentary bloggers don't need much in the way of performance gear for extreme sports like getting up to get another sugar free Red Bull—my knee is messed up, I swear!—ScottEVest seems to think we do.
Their SeV Performance T-Shirt is a light, moisture-wicking t-shirt with MP3-player pocket and built-in channel for a speaker cable. They're quite light and comfortable—I have an early version—and are great for stowing a nano and maybe a key when you're out for a run. The short sleeve model is $29.99 and the long sleeve model is $34.99.
SeV also pointed out they're having a Father's Day Sale, so this post is a two-fer.
Product Page [SeV]