Features:Features upgraded waterproof seal and buckle.Especially designed forInsta360 X3, perfectly fit and sealed to protect your action camera.Not only can be used for diving, but also can protect your camera and lens in all-round way to avoid scratches and scrapes of your camera.40m (limit)/waterproof shells adopts symmetrical locking, the structure and performance are very reliable, the shells body thickened more solid and not easy to deformation.Lens material: The toughened optical imaging glass is used, and the lens material transmittance is close to 92%. The transmittance of the lens reaches more than 98% by coating the AR-additional film layer, and the water drop Angle reaches 115 degrees by coating the waterproof film layer, so as to ensure that the water does not remain on the lens surfaces and affect the shooting effect. Specifications:Material: SiliconeSize: About. 155x73x38mm/6.10x2.87x1.50inApplicable Model: for 360 X3 Note:Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1 Set Waterproof Case