StarTech.com Ergonomic Anti-Fatigue Mat for Standing Desks – 20″ x 30″ (508 x 762 mm) – Standing Desk Mat for Workstations – Increase your comfort and prevent fatigue while standing at your desk, with this ergonomically designed floor mat – Anti-Fatigue Mat for standing desks and ergonomic workstations – 20″ x 30″ (508 x 762 mm) – Durable Premium Polyurethane Standing Pad