They appear to be made by Mims Wristbands, a company that, again after a hiatus, is making customized wristbands for Major League Baseball players that feature the player's likeness. From 1986-1992, Mims made bands for many of the game's biggest stars.
Mets prodigy Noah Syndergaard had a good debut that was overshadowed by Kris Bryant. The Rockies lost their 10th straight game and the A's broke a six-game losing streak. All that and much more. Come get caught up!