Music Binder: 30 sleeves present 60 letter size sheets.The music binder can expand 4 pages at the same time, which reduces the trouble of the musician interrupting the performance due to page turning. Elegant yet simple cover with embossed exterior, back cover has understated musical motif. Lay flat on music stand..Sheet music folder cover is 9.5”(L) x 12”(H) x 0.86”(W), A4 Size. Cover has inner slash pocket for loose items..Featuring transparent design within the page, the music folder will not fall easily,and there is no light reflection so you can see the music sheet under the light,Because of with compact size and lightweight body, the product is easy to carry. Use this convenient, sturdy, waterproof folder with bump technology can store documents, music scores, etc..The sheet music binder is bound by a metal double-ring spiral, which makes it easy to turn pages, and the pages can be tiled to 180°,Spiral binding allows the folder to open at a 180-degree angle..Light weight, clear cover ,flexible. Good choice for music lover.A great assistant for instrument players, musicians, students, office worker, etc.