Ergonomically designed to stimulate blood circulation and prevent fatigue by encouraging slight movement of lower legs. Highly flexible beveled edge reduces trip hazard. Specially-designed composite urethane technology. Ergonomically designed to stimulate blood circulation and prevent fatigue Standing on this anti-fatigue mat encourages slight movement of lower legs for healthy movement Highly flexible, beveled edge reduces trip hazard 24.02' Length x 35.98' Width x 0.63' Thickness - Polyurethane Foam - Black