Coghlan's Sight-Grid Signal Mirror is an essential signaling tool for emergencies. With the retro-reflective mesh sight grid, you can precisely aim the mirror's reflection, and the flashing light can be seen from up to 25 miles away. Its acrylic casing adds durability and enables it to float, making it perfect for water-based activities. Its compact and lightweight design makes it easy to carry, and its simple operation means it's ready to use when you need it most. Whether paddling or hiking in the backcountry, be prepared with this signal mirror to help rescuers find you quickly. FeaturesAccurately signals reflected lightDurable acrylic casing that floatsSight-grid retro-reflective meshLightweight: 1 oz. (28.3 g)Dimensions: 2 inch x 3 inch