The Attack Pack Pro was specifically engineered to work with a range of pods. With the variety of today's games, from Xball™ to 5 man, 7 man, and even 10 man, the amount of pods needed is ever-changing. Why have 4 different harnesses when you really only need one? The Attack Pack Pro eliminates large, excessive harnesses by compressing with each pod removed. This allows you to maintain the lowest profile possible, helping to keep you in the game longer. We stock grey but can order you one of other colors if you prefer in red, blue or yellow.