Mark 85 is much better than Mark 50. It has basically the same features as its predecessor, with some of them being much more advanced. First and foremost, this is a portable armor that forms around the wearer in just a few seconds. It is much more resilient and can reform itself after being damaged. Still, Mark 85 has a few drawbacks compared to Mark 50. For example, although its repulsors are much more powerful, they also use a lot of energy.