-The sharp edged design is durable, 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, waterproof, bringing warmth to every daily trip. -Specially designed with large capacity and wide bottom, it can accommodate full face helmets. -The thickened inner wall design helps to absorb impact force, resist impact and pressure, and facilitate the storage of valuable items.