To take on Amazon and Walmart, eBay vows to get items delivered in three-days or less, the online retailer announced.

The program, called Guaranteed Delivery, will launch this summer for customers in the United States. eBay will also include options for one-to-two-day delivery. The three-day guaranteed delivery applies to 20 million eligible items on eBay, the company said.

Read: Amazon 'Prime Air' Drone Delivery: First Trial Launched In UK, Trailer Release

Like Amazon Prime, customers will also be able to refine their search results by guaranteed delivery date.

"While the majority of items on eBay already ship within 3 days or less, as well as for free, Guaranteed Delivery will give shoppers even faster delivery options and the confidence that their items will arrive on time," eBay’s North America Senior Vice President Hal Lawton said in a statement.

The delivery program will be at no additional cost to sellers, but eBay says sellers will have meet certain requirements to participate.

Read: Losing Jobs To Robots? Virginia Legalizes Delivery Machines

eBay’s move comes after Walmart announced earlier this year its two-day shipping service without a membership for over two million items. Walmart previously had ShippingPass, which resembled Amazon Prime’s two-day shipping. ShippingPass, priced at $49, failed to takeoff and was nixed.

Although Amazon is double the price of Shipping Pass, it offers more services to customers, such as Amazon Video, music streaming and its photo cloud. The company also introduced a credit card that gives Prime members five percent back on their purchases with Amazon.