NIVIA PowerStrike 3.0 Court Shoes On the court, you need a variety of skills to defeat your opponent; speed, agility, and tactic come from within, but stability, grip, and support come from your shoes. The PowerStrike 2.0 is a non-marking indoor court shoe made for badminton and other fast-paced court sports. The upper will encase each foot in durable comfort. Create a better, healthier environment for your feet to thrive in.