Concave Volt 2.0 FG Firm Ground Soccer Cleat Black/Neon Yellow. UPPER: A textile upper for a soft touch and good fit. Fusion lining offers cushioning and comfort all game long. Football Form Fit (F3) lacing system offers support without added pressure or contorting the natural form. Concave\'s PowerStrike Technology sit s atop the laces; helping you get a clean and powerful strike on the ball with every shot.OUTSOLE: The most aggressive sol eplate Concave has to offer graces the outsole of the Volt. This oval stud configuration ensures you have traction through every s print and change in direction; offering high traction and uncompromising speed.WEIGHT: 8.6 oz.