What: The new collection of Gap sleepwear, loungewear, underwear and intimates for men and women is being sold only at Macy's and marks the first collaboration between the two retailers.

Why it is important: The collaboration raises questions over whether Macy’s would consider expanding its exclusive arrangement with Gap into other categories. Also, Gap could use a lift to its business, which has been reporting sales declines for several seasons: by featuring Gap products on Macy’s different channels, Gap hopes to encourage Macy’s shoppers to visit Gap stores and e-commerce.

Prices range from $12.50 to $79.95. The collection is being sold on macys.com, Macy’s mobile app and in select Macy’s stores around the U.S.

Macy’s partners with Gap on exclusive line