Simple Formula...1 Candle = 4 Straight Days of Light In most emergencies, the first thing to go (and the last thing to come back) are the lights. Light up your home, RV, dorm room, or tent for days or even weeks with a supply of Ready Hour 100-Hour Candles. 100 hours = A week or more of light. And with a pack of three, you are looking at 3 WEEKS or more! The secret to the Ready Hour Candle’s long life is a proprietary blend of paraffin and other liquids that maximize burn time to 100 hours per candle. That means, if the average day has 12 hours of darkness, each candle will last over eight days, burning all night! If you extinguish candles while you sleep (the recommended usage) that figure jumps to two to three weeks! That’s a lot of light for one little candle, which also includes: Three 100-Hour Candles A shatterproof container NEW child lock for added safety Replaceable cap for easy storage and transport Clean-burning, odorless, and smokeless Adjustable wick for more light* Light, safe, and sturdy plastic container Tetradecane fuel won't break down over time 3.5" Wide x 4 /4" Tall x 11" round Not recommended to store this candle under 32 degrees Made in the U.S.A. Added Safety for Your Family We've updated our 100-Hour Candle design to incorporate a bonus barrier of added safety for your family, especially those curious little kids. The NEW child-safe cap saves those fingers from playing with fire!   *Wick is made of cotton and is mercury-free. Before each use, trim the wick to 1/4" before lighting the candle.