Material and durability: Built with crackresistant Oxford cloth that is waterproof and easy to maintain. Provides wear resistance and longlasting protection for your contents. Enhanced protection: Waterproof and dustproof design with effective shock absorption. A density cotton lining helps prevent damage to items inside. Ergonomic comfort: Lightweight, ergonomic design with wide, breathable shoulder straps for even weight distribution. Reduces shoulder fatigue during long wear sessions. Storage capacity and organization: Large storage capacity with multiple external pockets. Securely accommodates sheet music and related accessories. Use scenarios: Daily lessons and rehearsals: Carry sheet music, small accessories, and notes between studios with organized pockets and padded protection. Performances and travel: Protects contents from rain, dust, and bumps during transit to gigs or competitions. School and practice commutes: Comfortable, practical carry for students to transport music sheets, documents, and practice gear to and from classes.