adidas Soccer Cleats: adidas Kids F50 adizero FG. The fastest boot to hit the field is made for lightning fast footwork. Sprintskin, a revolutionary single-layer synthetic, reduces the weight. Innovative internal TPU support bands in the upper offer support and stability. The adizero has an ultralight sockliner and comes with second pair of comfort sockliners. Sprint frame for lightweight stability. TRX TPU outsole has a new stud configuration that improves your balance at top speeds.