PSI radiation is one of the worst effects that you can contract while exploring The Zone in Stalker 2: Heart of Chornobyl. Although some suits provide PSI protection, the SEVA series of suits are built to withstand the negative effects of PSI radiation. Players can find three variants of SEVA suits for free in the game's open world. However, getting each one can be challenging as they're found inside locations that aren't quite easy to walk into. So, let's go over all the SEVA suits you can get in Stalker 2 and determine which one's the best.