■ MORE ANGLES FOR YOUR GLUTES
Since the glutes contain the largest muscle of your body (the gluteus maximus), they should get the attention they deserve. The glutes extend and abduct your hip and perform internal and external rotation of your thighs, so you should do more than just squats and deadlifts - especially if you struggle feeling (and thus developing!) your glutes during compound movements.
That's not all: strong glutes also help prevent knee and lower back injuries and are useful for several rehab workouts.
As with everything, the pareto principle applies to the A90 Hip Bands too: you can probably perform 15+ exercises, but the ones with the - by far - biggest added value are kickbacks and all external hip rotation movements.