ANTICA Blue Light Filter Anti-Glare Screen Protector/ iMac21.5-inch Newest and high quality screen protector by ANITCA Filters harmful Blue Light, which can lead to eye-fatigue and eye-strain. Reduces glare and limits eyestrain. Package Including: Alchol wet tissue, Cleaning Cloth, Bubble remover, Instruction manual Protector Sizes H x W(inch) 20.7'' x 12.5''