The American classic design folds for easy storage and portability with a spring-loaded trigger release. The two section vertical shaft with cam locking clutch and tilting book plate features make this stand adjustable for sitting or standing positions. The fold out extensions with a six point hinge system can hold three 8.5" x 11" sheets. The sheet music stand bag included in this combo pack comes with a convenient shoulder carrying strap. All edges are piped and the durable material make this bag a smart choice to protect your stand. Book Plate: 9" foldable with 2"return lip Height Adj.: 26"-40" Base Spread: 18"-21"