Flow-through mats are designed for wet environments.  The surface offers extra traction while the holes allow liquid to pass through to help eliminate slipping hazards.  Flow-through mats also provide excellent anti-fatigue benefits for workers who stand for long periods of time. When jobs require an employee to stand for long periods of time, blood flow to the lower extremities is restricted causing soreness and fatigue.  Anti-fatigue mats provide support to muscles in the lower legs and back and promote subtle movement in the leg and calf muscles which results in increased blood and oxygen flow.