Tippmann Custom Pro
J&J Ceramic Series Barrel
BT Sealed Bolt System
Paintballs bounce off of flexible rubber
None, although some people may not like the flexible rubber part.
I play paintball in the heat and humidity of Southern Mississippi. Both of my previous masks would fog up after only a few minutes of play. I finally looked into getting a mask that not only had a thermal lens, but that was cheap. It seems that I made the right choice.
The Flex-7 is comfortable, and has good ventilation, which is important to have in those hot and humid climates. The thermal lens hasn't fogged on me yet, and I absolutely love the flexible rubber part.
The deflection of the paintballs does come at a cost: The rubber part is so flexible that it flexes back and hits you in the face sometimes when the paintball strikes it. Sometimes it hurts a little bit, but as long as I can stay in the game, I'm happy.
I recommend this product to anyone that needs a good mask. I especially recommend it for players who are exposed to excessive heat and humidity.