The NDUR Emergency Signal Mirror is made of robust high impact plastic. Easy to use with one hand. Hold the backside to your eye to peer through the view finder in search of rescuers. Suns reflection can be seen for many miles. Floats if accidentally dropped in water. Ideal for Survival Kits. Features: High impact plastic Easy to use View Finder Reflection can be seen for many miles Floats if dropped in water Ideal for Survival Kits Includes Lanyard .7oz (20g) 3 x 2 x .25 (8 x 5 x .5cm)