adidas Youth F30 TRX FG Soccer Cleats Upper: TPU bottom frame reinforces the upper and prevents abrasion in the kicking area. Singmax: A newly developed high-density nonwoven PU synthetic. Inlay: A pre-molded sockliner offers maximum comfort and extra cushioning. All linings inside the shoe are treated with AgION technology, which works against bacterial growth and odor development. Outsole: A new TRAXION stud shape for maximum accerlation and grip on firm natural surfaces.