4-panels. Each panel is 50" wide x 63" long. The set is perfect for a single window (as pictured). Some people use one panel for each window- it’s totally up to you. A single panel will offer full coverage for most windows. Check the length you need - mine is 63”, which is harder to find (I.E. target only has super long panels at 80”+ which I hate!) 100% cotton. Light block liner panel in the back. Polka dots in brown, red and pink. Brown flower as well. Could be for a kid - but I had an office with dark walls that complimented this perfectly. Panels are too long for my desk window, so I am just changing them out. Land of Nod