I layered it over a long-sleeved technical shirt because it was 43 brisk degrees when we started our run. The actual shirt is a Hanes unisex technical shirt - I requested a medium and it fit fine. The only thing that might be an issue for me, if it was a hotter time of the year (which, knowing our strange weather, could be next month), is that the decal is pretty big and really cuts the breathability and wicking of the shirt...I've had a couple of race shirts like this and felt so sealed in by the heat that I couldn't wear them once it got hot and humid. So you might take that into consideration if you want to order one - or you might live in part of the country where you don't have to think about these things...lucky you!
These shirts go for $19 for a short sleeve , and $25 for a long sleeve , but you can win one and choose the number of miles you'd like printed on it, along with your color choice (blue, green, red, orange, white, neon yellow, safety orange). To enter the giveaway, please tell me how many miles you'd put on your shirt (they offer 3.1 through 15, and then 18, 20, and 26.2). This giveaway is open to everyone on planet earth, although it'll still say miles and not kilometers - but hey - it can be a math challenge if you're outside the U.S. and win! I'll announce the winner on Friday's mishmash. Good luck!
FTC: I was sent a shirt to review for free; Today's Miles will provide another shirt to the winner of this giveaway.