Concave Halo+ Pro v2 features an A-grade kangaroo leather upper with stitching across the boot to give you that lock down you need and a neoprene inner for ultimate comfort. The soleplate has also been completely revamped, featuring dual anti-torsion bars and a hybrid stud configuration for ultimate grip and traction on firm ground surfaces, with increased width to help fit more feet. Patented AccuStrike Railing System (ARS) technology increases the kicking sweet spot and improves accuracy by guiding the ball as it wraps around the foot Dual anti-torsion bars and Hybrid stud configuration soleplate for ultimate grip and traction. Firm Ground (FG) soleplate designed for use on Natural Grass Pitches.