NIKE CTR360 MAESTRI FG MENS SOCCER CLEATS Kanga-Lite synthetic leather improves the boot's overall fit, comfort and performance whatever the conditions. Internal heel counter with exterior heel clip for added stability and comfort. High frequency welding construction reduces amount of stitched seams throughout for enhanced fit and feel. Engineered collar for comfort. Firm-ground (FG) studs for use on short-grass fields that may be slightly wet, but rarely muddy.