The second installment of the GP II was a beastly piece of footwear. It featured a lightweight one piece synthetic leather ‘shimmer’ upper, comfort collar backed with slow recovery PU foam, integrated injected TPU midget/forefoot ‘chassis’ stability enhancement unit, fully internalized lightweight Pylon, forefoot and hell Zoom Air units and solid rubber maximum traction outsole with Optimal Motion forefoot flex grooves. Today prices are from 125-225 depending on size and condition.