Mesh upper offers lightweight breathability Flywire cables provide a locked-down fit Strategically placed rubber on the outsole offers excellent multi-surface grip Sandwich mesh tongue for a comfortable fit Dual density foam provides lightweight cushioning Outrigger offers lateral support Rubber toe tip provides durability and grip during training exercises such as planks and push ups Create the foundation for a great workout with Nike's Retaliation TR Cross Trainer. Combining a lockdown fit of Flywire cables with a mesh upper for breathable flexibility, this shoe offers a solid rubber outsole with a training specific traction pattern for superb multi-surface grip.