The Reusable Static-Cling Window Blockout is a blackout window cover designed to create complete darkness for babies and toddlers—helping them sleep more soundly, day and night. A dark sleep environment supports natural melatonin production, the hormone that regulates sleep and wake cycles. This can help your baby settle more easily, stay asleep longer, and avoid early waking—especially during brighter summer months and daylight saving time. Suitable for single or double-glazed windows throughout the home.Not suitable for frosted or non-smooth window surfaces. Made from three layers of material, including a fully opaque inner layer that blocks 100% of sunlight. The white outer layers blend seamlessly into your child’s room for a clean, neutral look. Features: Blocks 100% of light Reusable static-cling design Cut to size for a perfect fit Roll or fold for easy storage Wipe-clean surface Essential sleep tool Travel-friendly