The Nike Tiempo Legend 8 Academy TF impresses with the legendary ball feel of calfskin and provides multi-directional traction with a non-slip rubber outsole. - for traction on synthetic turf - leather ball feel - for better ball control soft diamond-textured calfskin is not stitched. The rubber outsole is based on Nike Sports Research Lab analysis of player movements and provides multi-directional traction on artificial grass surfaces. - Insole and foam in the heel for cushioning - Lacing loop for a non-slip grip of the tongue.