Durable waterproof and crack-resistant oxford cloth construction delivers reliable wear resistance, rugged protection, and easy maintenance for long-lasting use. Upgraded protection features The waterproof and dustproof design provides effective shock absorption and a high-density cotton lining to cushion contents and prevent damage. Comfortable carrying Ergonomic design with wide, breathable straps distributes weight evenly, reducing shoulder fatigue and keeping you comfortable even after hours of wear. Large storage capacity Multiple external pockets allow organized storage of sheet music and accessories, keeping items secure, accessible, and easy to find. Use scenarios - Gigs and rehearsals: Protect sheet music and accessories while moving between venues in various weather conditions; quick access on demand. - Practice at home or in a studio: Neatly store sheet music and small gear, with easy access during practice sessions. - Lessons and travel: Comfortable carry between lessons or transit to and from performances, with organized external pockets for frequently used items.