These are the sandals with spring-loaded heels that return energy to every step. A spring compresses into the heel of the sandal, absorbing 30% more pressure on the heel than typical footwear and returning 50% of that energy to one's stride. The sandal's PU insoles provide arch support, further reducing pressure on the heel bone, allowing the plantar fascia to stretch, encouraging proper heel-to-toe gait. Scientifically engineered elasto-polymer midsoles protect metatarsals and support a fluid walking motion. Top-grain genuine leather uppers with a flexible heel strap and adjustable buckled strap over the top of the foot provide a custom fit. Powered by the heel's compressive motion, the sandals' integrated ventilation system cools the foot by expelling heated air from the shoe's interior. Brown or Black. Medium width. Women's size 6. (8 oz.)