The radiation and the blue light blocker are so easy to attach to the phone, such a great way of ensuring no pockets of air get trapped, the screen is just as smooth as before it was put on! I love knowing I’m protecting my eyes from the harshness of blue light - I noticed a big difference straight away in that my eyes were much less sore after time on the screen than they previously were before using the blue light blocker - this is much appreciated. I also really like the radiation blocker on the back of the phone knowing there is up to 79% more protection from any radiation the phone gives off. Great company and fantastic products, really glad I found you, other members of my family have now also bought products from this company - thank you so much.