O Fit Insole Plus IIPowered by Poron Performance technology, the new O FIT Insole Plus II Collection puts the foot on a pedestal (or a podium). How, you ask? By reducing step shock, which improves stamina By providing high energy return, which invigorates your step By offering Standard, Thermal, and Giveback options for anytime, all weather comfort While O FIT Insoles come standard in every pair of Oboz, our trim to fit O FIT Insole Plus II upgrades just about any shoe