Galaxy S7 Night Luminous Case CoverLYSHOP Fluorescence Glow in the Dark TPU Slim Phone Cases Luminous Soft Silicon Phone Cover Case for Samsung Galaxy S7 (Color-15) Luminous Transparent Glow In The Dark Case Cover For Samsung Galaxy S7 The case need absorb sunlight or lighting for a while,then there will be the luminous effect. Material: Tpu soft silicone. Easy access to all buttons, controls & ports without having to remove the case Unique luminous night glow design--Polymer luminous materials design and HD print technology absolutely make sure your phone instantly become focus, even in the night or darkness