what usps ground advantage is a shipping option offered by the United States Postal Service for parcels that are heavier or larger than typical first-class mail but still need to be shipped at an affordable rate. USPS Ground Advantage offers reliable delivery for packages weighing between 1 and 70 pounds. It is typically used for shipping larger items or for bulk shipments that do not require the speed of priority services. USPS Ground Advantage is known for its affordability, making it a popular choice for small businesses and e-commerce retailers looking for cost-effective shipping solutions.