Barefoot Science® 5 Step System Size:L - US Men's: 10 - 11.5 The 4 Step System comes

The 4 Step System comes with 4 interchangeable inserts that allow you to customize how Barefoot Science® works best for you – for reduced muscle fatigue

It provides dynamic full-foot sensory engagement through the arch

Transforms your shoes into a therapeutic exercise program for your feet

Best for shoes WITHOUT removable insoles

Barefoot Science® 5 Step System Size:L - US Men's: 10 - 11.5 The 4 Step System comesFor reduced muscle fatigue, improved static and dynamic balance, and relief from sore feet. The 5 Step System comes with 5 interchangeable inserts that allow you to customize how Barefoot Science works best for you for reduced muscle fatigue, improved static and dynamic balance, and relief from sore feet. For all activities: walking, running, and standing. Comfortable, safe, and easy to use. Helps alleviate foot, leg, hip, and back problems. Available