Borrowing from its predecessor, the 2nd version of the GEL-Fit Sana™ keeps the same fitness focused sole geometry with the addition of a FluidFit™ printed upper. The MONO-SOCK® tongue Flexible Fit System features elastic bands that provide tension and support from heel to forefoot. Rearfoot GEL® cushioning systems combine with the lightweight flexible midsole to provide excellent cushioning.Breaking a sweat has never been so comfortable. Weight: 5.4 oz. Heel Height: 17mm. Forefoot Height: 8mm.