-The sharp-edged design is durable and resistant to drops and impacts. -Stainless steel head lock, anti-theft, enhances security and prevents lock damage. -High-quality reflective strips and photosensitive reflective materials enhance the safety of nighttime travel. -Waterproof and dustproof, fully sealed design, bringing warmth to every daily trip. -Specially designed with large capacity and a wide bottom, it can accommodate full-face helmets. -The thickened inner wall design helps to absorb impact force, resist impact and pressure, and facilitates the storage of valuable items.