Color: NOMAD Size: W8 The OOahh, a shower sandal type, is a popular standard item from OOFOS. The special material OOfoam used in OOFOS products differs from the midsole of general EVA materials, which are designed to generate forward momentum. It reduces impact by 37%, mitigating the impact on the soles of the feet upon landing. OOFOS recovery sandals with OOfoam technology absorb 37% more impact than conventional footwear. The special material OOfoam used in OOFOS products differs from the midsole of general EVA materials, which are designed to generate forward momentum. It reduces impact by 37%, mitigating the impact on the soles of the feet upon landing. The unique footbed design reduces stress on the knees, ankles, and other joints. They can be worn in various situations, such as outdoors, indoors, and for office work.