The reusable static-cling Window Blockout is the perfect blackout solution for babies and toddlers who need total darkness in their room to sleep and dream the night away. A completely dark room during sleep will be comforting for your baby, and help prevent early waking or late settling during summer and daylight saving. PVC 0.24mm + 170GSM paper Our baby black out blind is made from 3 layers of material with a completely opaque inner layer to block 100% of sunlight from rooms. The outer layers are white to seamlessly and stylishly blend in with your child’s sleep space. The inward-facing side of the blind will block out the light, and the outward-facing side will reflect light away from your windows, helping to regulate the room’s temperature for a more comfortable sleep. Care Wipe clean with a damp cloth or wet wipe. Debris stuck to the cling side will reduce effectiveness. Size Please measure your windows before purchasing to know how many rolls you will need. Warnings Do not use directly above or within arms reach of a baby's bassinet, cot or bed.