OtterBox Commuter Series Case for Samsung Galaxy S4 - Glacier Gray/white Multi-layer: sturdy, 2-layer case with asel-adhesive screen protector. Materials: durable silicone inner layer snugly cushions and sturdy polycarbonate outer layer. Drop protection: two materials work together to absorb and deflect shock away from the Device. Dust protection: sealed port covers stop dust, dirt and lint from clogging your jacks and inputs. Screen protection: self-adhesive screen protector guards touchscreen against Scratches and scrapes.