The GT material uses the same NEOS material with membrane as the durable Assos jackets. The NEOS Medium is the main woven fabric used, as the 3L softshell with breathable signature PU membrane blocks wind and water while providing high levels of insulation for the legs and ankles. The covers feature a reverse caston zipper, while zeroCuff technology creates a smooth transition between skin and fabric, promoting an aerodynamic profile. The sportGrip monostretch material is applied to the sole for durability and to enhance grip during hiking.