I weigh 195. I can jump one-footed on either of my parallettes and it won’t flex, creak, or give the slightest indication of strain.
Based on this incredibly unscientific testing, I’d wager my set is good for over 450 lbs, and a 1.5" set (standard width) to north of 300.
AG’s version is 1" piping, and somewhat longer than necessary for most maneuvers. Trim an inch off the length and you can boost the maximum weight to 215 for that design.
DI