Rudy Project Men's LTD Run Shirt – Chillout Xylitol Cooling Fabric, UPF 50+

I've been running for years and this shirt is the first one that actually keeps me cool. The Chillout fabric really works – I feel the difference the moment I put it on. The UPF 50+ is a bonus, and at this price it's a steal.

The cooling fabric is legit – I stayed dry on an 8-mile run in 90-degree heat. However, I had to size up. I'm usually a large, but the large was snug, so I exchanged for XL. Once I got the size right, it's been my go-to for summer running.

I wore this for my last marathon and it was fantastic. The fabric is lightweight, wicks sweat like crazy, and the chili-cooling effect is noticeable. Plus, I didn't get a sunburn even after 4 hours in the sun. Highly recommend!

It's a decent shirt, but I didn't find the cooling effect to be as strong as I expected. It does keep you dry, and the UPF is a plus, but I've had other shirts that feel cooler. Maybe I had high hopes.

This shirt is awesome!

At $26.25, this shirt is an absolute steal. I bought two more after trying the first. The cooling fabric is perfect for the Texas heat, and it doesn't get all heavy with sweat. My only wish is that they made more colors.

The shirt performs well – very cooling and breathable. The only reason I'm not giving 5 stars is the fabric has a slightly shiny look to it, which I'm not a big fan of for casual wear. But for running, it's perfect.

I've tried many tech shirts, and this one stands out. The Chillout fabric actually feels cooler when you sweat, which is amazing. It's also very light and doesn't chafe. I just wish I'd found it sooner.