Blindify’s Light Blocking Strips solve a specific, frustrating problem: the slivers of light that leak around your window shades. They’re simple PVC strips designed to seal those gaps completely. For light-sensitive sleepers or anyone trying to darken a room for a projector, this is a straightforward hardware fix.

The strips claim to block 95% of side light, and in practice, they deliver a near-total blackout. You get four 58-inch grey strips in a pack. Installation is purely mechanical. You measure the gap along your window frame, cut the strip to length with household scissors, and press it into place. The material is rigid enough to stay put but forgiving enough to trim easily. It creates a physical barrier that even the brightest morning sun can’t penetrate.

This is a no-frills, single-purpose product. The PVC feels durable for indoor use, and the grey color blends with most window trim. Just know it’s a permanent adhesive application. You’re committing to that placement, and removing it might require some cleanup. For the price, it’s an effective and immediate upgrade to your existing window coverings.