Alright, so I was watching some golf, you know, just catching up on a tournament. And I kept noticing Justin Thomas, JT, he always seems to have this little band thing on his arm. Not really his wrist like a watch, sometimes it’s on his forearm, sometimes maybe higher up near the bicep.

It made me curious. What is that thing? It’s not flashy, just a plain band, usually black. It didn’t look like some kind of fancy watch or anything. You see these pros with all sorts of gear, and I always wonder what edge they’re trying to get.
Starting the Search
So, naturally, I decided to figure it out. First step, I just observed closely whenever they showed him on TV. Tried to get a good look. It definitely looked like some kind of tech, but very minimal.
Then, I did what most folks do these days. I hit up the internet. Just started typing things in. My search history probably looked something like this:
- what band does justin thomas wear on arm
- jt golfer arm strap
- black band golfer forearm
- athlete tracker arm band
You know, just throwing stuff out there, seeing what stuck. Lots of pictures came up, mostly of him playing golf, of course.
Digging Deeper
I clicked through a few articles, some forum discussions maybe. Started seeing mentions of “fitness tracker” or “recovery band” popping up next to his name. That seemed like the right path. It wasn’t just him either; I saw other athletes, even other golfers, wearing similar looking bands.
Took a little more searching, specifically looking for brands associated with golfers and these types of bands. I compared pictures of the band JT wears to different products online.
Finding the Answer
Eventually, I nailed it down. It seems like the most common thing he wears, and what most people identify it as, is a Whoop strap. Yeah, Whoop.

From what I gathered, this thing isn’t like your typical smartwatch. It doesn’t buzz with notifications or show the time. Its whole job is to monitor your body.
- It tracks your sleep cycles, really detailed stuff.
- It measures your heart rate variability and resting heart rate.
- It calculates how much strain your body is under each day.
- And then it gives you a recovery score, telling you how ready your body is to perform.
Basically, it’s a tool for serious athletes to understand their bodies better. Helps them know when to push hard in training, when to take it easy, and how well they’re sleeping and recovering. All that data goes to an app on their phone.
Makes sense why a top golfer like JT would use it. Golf requires so much focus and physical endurance over long tournaments. Knowing exactly how your body is doing could be a real advantage. It’s all about optimizing performance.
So, that mystery band on Justin Thomas’s arm? It’s pretty much confirmed to be a Whoop strap, helping him track his biometrics. Just another piece of tech these guys use to stay at the top of their game. Took a bit of looking around, but that’s what I found out.