Speedland The GS:TAM is the ultimate trail equipment for long distances. Precision fit is paired with maximum comfort and responsiveness to propel you through the mountains faster. Named for Mt. Tamalpais, the GS:TAM was designed and perfected with Speedland athlete Dylan Bowman. used less than 30 miles (too small) Features include: 100% beaded Pebax® external midsole Proprietary drop-in midsole blend containing Pebax® elastomer (removable) GS:TAM is not compatible with custom insoles PerformFit™ Wrap activated by BOA® Fit System featuring multidirectional dual-dial Li2 Carbitex GearFlex plate compatible (plates sold separately) Michelin Fiber Lite outsole with 4.5mm lugs Spacer mesh upper with strategically placed high-tenacity fiber Design details pay homage to Speedland athlete Dylan Bowman