The filter adds an anti-reflective layer to your screen e.g. to reduce screen glare from sunlight when used outdoors. 3H anti-glare filter for Lenovo ThinkPad X1 Yoga Gen 6 Touch-enabled Silicone layer on the back for full-surface adhesion Clear view at all times High colour fidelity Reduces glare and fingerprints High mechanical resistance Attaches easily without forming bubbles Leaves no traces when removed