The SunDown range are designed and verified to block 100% of blue light. The SunDown Blue Light Blocking Glasses are designed for evening use to increase melatonin levels and sleep quality. The amber lens is an ideal option for people still wanting a high quality premium 100% blue blocking lens, but prefer a lighter amber tint over the red lens to allow more colour perception in the evening hours. Not all amber blue blocking glasses are the same. When looking to buy a set of blue light glasses for night-time, ensure the company can provide a lens testing report showing and verifying 100% of blue light is being blocked by their glasses, as even a small amount of blue light after sunset will send these daytime signals to your brain, which will significantly lower sleep quality.