The Lingzhidaishu Business Briefcase is a versatile and structured multi-functional bag engineered for working professionals, corporate executives, and business travelers. Featuring a dual-use design, it acts as a traditional handheld briefcase via reinforced top handles and quickly converts into a hands-free crossbody messenger bag using a detachable strap. It is constructed from a high-quality, wearable polyurethane (PU) synthetic leather with a classic grain finish that delivers an upscale professional aesthetic while protecting your daily technology and documents from light moisture and scratches.