A review of the Reebok Nano X4 has been published, but some outlets are instead covering the Reebok Nano X5, suggesting a possible new model. The Nano X5 is being reviewed and compared to its predecessor, the Nano X4, with some outlets also discussing the best Crossfit shoes available in 2026. The focus of the coverage appears to be on Reebok's Nano series, with the X4 and X5 models being specifically examined.