Paul Lukas has all the details in his blog. I will share a few thoughts.

• I hope that all these caps are the same red, white and blue color scheme. If the A’s had their green and gold featured in this cap, it will look terrible.
• The flag isn’t necessary. It just clutters it up even more. From the first glance, I was afraid that the gray would be the reflective material New Era has used recently. But that would be illegal so it’s not there.
• This is what happens when they’re running out of ideas. I have no problem with the design really. But the problem lies within the fact MLB is using it as an official part of their uniform.