MIZUNO ENERZY NXT is a nitrogen-infused version with resilient supercritical TPU (instead of EVA like a different version of NXT)

Synthetic outsoles

SwallowTail® heel

Eco Anti-Odor for natural

The nitrogen-infused EVA midsole provides energy return and a strong ground feel

Saucony Kilkenny XC 9 Spike, Men's Birkenstock MIZUNO ENERZY NXT is aMade in Vietnam Tackle your personal best in the Saucony Kilkenny XC9 (Spike) sneakers. The low cut tops feature padded collars and logo patch on the tongues. Lace up closures make for comfortable wear. Branded designs on sides of uppers. Round, closed toe silhouette with toe guard design. Spiked design on outsoles. Textile uppers, linings, and insoles. Synthetic outsoles. Imported. Product measurements were taken using size 9. 5, width D Medium.