Note: Before each use, please pre-test the waterproof bag to ensure its waterproof performance, and do not carry this bag diving more than 5 meters. Upgraded and better quality: Made of durable and soft high-density PVC material. Not easy to deform, effectively seals out water vapor and safely protects your devices and documents. Strong waterproof ability: IPX8 waterproof rating. The blue model features three zipper locks, while the black model features double zipper locks, ensuring protection against water and dust during activities such as boating, kayaking, fishing, hiking, surfing, and camping. Adjustable belt: The belt can be adjusted to the ideal length with a detachable buckle for a comfortable fit around the waist. Responsive touch screen: Flexible PVC material allows you to operate your smartphones touch screen to check emails, messages, and answer calls without opening the case.