Experience the WaveSpring^® technology of Spira, an innovative footwear company making premium athletic shoes with a patented energy-return system that reduces stress on muscles and provides exceptional cushioning and resiliency. Lightweight stainless steel springs built into the sole unit at heel and forefoot stand up to wear better than compressive foams for an extended “new shoe” feel. The black-and-white synthetic-and-mesh CloudWalker has breathable uppers, a removable Memory Foam insole, a full-length compression-molded EVA midsole and an UltraGrip full contact rubber outsole for stability and support. Normally stocked in men’s sizes 7–12, 13, 14 and 15 in 4E and 6E widths, but due to global production bottlenecks, Spira will be unable to supply us with more shoes in some sizes -- especially larger sizes in 6E -- until later in 2022. Feel free to place your order now to get in line for earliest delivery.