Our Concrete Vessels are 100% Handmade, hand painted, sustainable, and reusable. Each vessel is sealed inside with a water based, non-toxic, no VOC sealer. If you wet/wash the vessel, please allow 2 days to dry before using for candles. Each vessel holds 3.6oz of candle wax. These Vessels are great to use as mini-planters and/or Home Decor. Please allow an additional 2-3 days of shipping as these are made upon ordering. PLEASE TEST YOUR CANDLES! START WITH A SMALLER SIZE WICK FIRST TO ENSURE NO OVER-BURN OR CRACKING HAPPENS. MAX BURN TIME FOR THESE CONCRETE CANDLE VESSELS ARE 2 HOURS, NO MORE THAN THAT :)