Under Armour is building its baseball category around Bryce Harper. The reigning National League MVP’s endorsement deal with the brand, which was extended earlier this year, is the largest for any Major League Baseball player in history and guarantees that he’ll be repping UA on the field for at least the next 10 years.

To set this new partnership off, Under Armour is dropping the player’s and the brand’s first signature baseball cleat this month—the Harper One. Here’s a full breakdown of the model with the shoe’s designers, as well as a first look at upcoming colorways.