The Under Armour NASL Official Match soccer ball is what the title states—the official National American Soccer League match play ball.
The NASL complies with FIFA standards, and the standard ball comes with the FIFA Quality Pro stamp of approval.
Like other Under Armour balls, it features a hand-stitched outer construction for quality. It also includes a textured cover that improves flight control. Latex bladder construction also enhances touch. All in all, you should receive an excellent play experience from the ball.
Players say that the ball feels heavier than Adidas or Nike soccer balls. However, the opinion is likely a personal experience, an issue with inflation, or they wrongly compared it with non-FIFA standard balls. Any product with the FIFA Quality Pro stamp will only be minutely lighter or heavier than another FIFA Quality Pro ball by design.
More people report an issue with the bladder on Under Armour soccer balls compared to other brands like Senda. The same is true of the NASL Official Match ball. However, it is also worth noting that all match balls deflate over time, so the issue would appear over and over again no matter what you buy.
The ball falls in a category that makes it more expensive than replica balls but significantly cheaper than other high-quality products. Players say it is worth the upgrade because the tactile surface provided by the textured cover is invaluable.