Copying the business model of services like Nordstrom’s Trunk Club or Blackcart, Amazon Prime Wardrobe is a new prime perk that lets shoppers try clothing from Amazon Fashion before actually purchasing anything. After a shopper receives a shipment, they simply keep whatever they want and toss everything else back in the box to return to Amazon.

Amazon is giving users seven days to decide what to keep. If a shopper decides to keep three items, they will receive 10 percent off the entire purchase price. If they decide to keep five items, they will receive 20 percent off the purchase price.

The customer doesn’t pay anything for shipping to return the items since Amazon includes a prepaid shipping box with the original package. Users can request a free UPS pickup or just drop it off at a nearby UPS box.

More than one million items are eligible for Prime Wardrobe in men and women’s fashion as well as kids clothing, baby clothing, shoes and accessories. Some of the top brands include Levi’s, Calvin Klein, Timex, Adidas and Hugo Boss.

At this time, Prime Wardrobe is still in the beta phase of testing and currently isn’t open to the public. You can sign up to be notified when Prime Wardrobe launches here. There’s also a video below to explain how it works:

Amazon launches “Try before you Buy” model with Prime Wardrobe