Mauricio Pochettino isn't messing with a good thing. The United States coach at the 2026 FIFA World Cup continues to wear the same shirt on the sideline, and he doesn't seem intent on changing.It may look like a relatively plain button-down shirt, but it's not cheap.And during the World Cup, it's doing crazy sales numbers.MORE: Singing Hey Jude as Bellingham sets epic World Cup recordWhat is Mauricio Pochettino's shirt? How much does it cost?That's a Hugo Boss shirt.According to Morning Brew, it costs $499.MORE: An airport decision changed everything for Folarin BalogunHow to buy Mauricio Pochettino's sideline shirtTechnically, you can just go to the Hugo Boss sales page and buy one.The problem is that they sold out "within days" of the first U.S. game, according to Morning Brew.According