The Aviation Grade Aluminum Alloy Is Used To Reshape The Phone's Protection, Retaining Only The Most Necessary Frame And Lens Protection, Eliminating The Redundant And Retaining The Essence. The Hollow Structure Improves Heat Dissipation Efficiency, And The Ultra-thin Metal Edging Fits The Body Curve. The Elastic Anti Drop Structure Absorbs Impact Despite The Extreme Thickness. The Backless Design Restores The Feel Of The Bare Phone, Allowing The Coolness Of The Metal And The Original Texture Of The Body To Breathe Freely.