Standing for long periods of time on hard floor surfaces is very uncomfortable and causes physical fatigue. Leg muscles become totally static and blood flow is greatly reduced causing pain and discomfort. This DOORTEX® anti-fatigue mat helps combat such fatigue as by standing on an anti-fatigue mat, muscles will subtly contract and expand as they adjust to the flexibility of the mat. This increases blood-flow and the amount of oxygen reaching the heart, thus greatly reducing fatigue. This floor mat is a perfect accompaniment to the growing stand up desking market.Consumer Delivery Expectation: Next working day