Nike SFB Field 2 8"/21cm Outdoor Boot - Black A modern, athletic boot built for those who defend and protect, the Nike SFB Field 2 8"/21cm Outdoor Boot features aggressive traction and a durable upper that provides comfortable support. The outsole is equipped with an aggressive traction pattern and internal rock shield for multi-surface grip and puncture protection. Locked-Down Support An 8"/21cm collar offers support around your ankle while the lacing system keeps your boot in place as you move. An updated locking lace system allows you to lace up once for a locked-in fit with an easy pull at the top laces for quick on and off. Complete Comfort A foam midsole inside the boot provides lightweight cushioning. An internal rock shield helps reduce pressure and protect against punctures while still maintaining flexibility. Durable Traction An aggressive multi-patterned sole design offers hard rubber for rugged durability and sticky rubber for solid traction. The sole wraps up around the toe and is stitched on for added durability.