Amazon Starts Same-Day Deliveries From Diesel and PacSun Stores Inc. has started delivering items from brick-and-mortar stores in a dozen US metro areas, the e-commerce giant’s latest effort to make more products available for speedy delivery.

The company’s initial partners are Diesel, PacSun, GNC and SuperDry, Amazon said in a blog post on Monday. Bloomberg in May reported that Amazon was testing the service, which uses the company’s gig-economy Flex drivers to retrieve and deliver orders.