The women's XC5Kv5 takes the speed-seeking technology of track spikes and incorporates it in an agile silhouette designed for cross country. With the v5, we designed a new burrito construction and single layer mesh upper to provide an incredibly lightweight but aggressive fit. And, inspired by our track spikes, we added a new knit collar construction for a socklike feel. The bottom unit features the same responsive REVlite midsole with an aggressive 5-spike configuration.