Box measurements: 6 inches wide x 6 inches long x 5 inches high

Type In-Ear

Back is height adjustable with a built in lumbar support to reduce back and neck tension while you work

The head-to-toe

4-Tier Ladder Shelf Bookcase Box measurements: 6 inches wide4 Tier Ladder Shelf Bookcase Leaning Home Office Free Standing Wooden Frame Decor Bookshelf Storage Flower Shelf Display Shelf Introductions: If you are looking for a practical bookshelf, you can't miss this Widen 4 TiersBookshelf. This bookshelf is made of high quality material, which is stable,sturdy and durable. Its design of 4 tiers can hold a lot of books, and itsstrong bearing capacity can bear 44 88 lbs. You not only can put book in