Nike Zoom X Super Rep Surge Training Shoes These training shoes from Nike have been engineered with Zoom X foam to deliver incredible energy return and a springy feel with every step, while the rower clip at the heel makes it easy to transition from the rowing machine and the rubber tread maximises traction. The shoes have a side arc supports your foot for strength training intervals, while the plush collar supplies great comfort and the Nike Swoosh branding completes the design.