adidas F5 TRX FG - Women'sIt's one of the planet's fastest boots. And now the adidas F5 TRX FG is even lighter and faster. This boot required an ultra-light synthetic upper and a die-cut EVA inlay to comfortably cushion without adding much weight. Pushing the acceleration are TraXion™ studs for multidirectional grip. Wt. 7.6 oz.