The glass is made in Spain of 100% post-consumer recycled material. It is filled with pure raw beeswax which has been lightly filtered to provide the best possible burn. And just in case you missed it --- there are three wicks! This will make sure all the wax gets burned, and three wicks look really cool when lit.We also make custom refill candles for this glass. Save an additional 10% when you subscribe to them. Features Average Burn Time: ~18 hours Poured into 100% post-consumer recycled Spanish glass 100% pure, lightly filtered beeswax Non-toxic, lead-free, hypoallergenic Cotton wick - no lead or metal Custom refills are available in Pure Beeswax and Beeswax Botanica (scented with essential oils) Dimensions & Care 10oz glass holder. 4.25in dia. x 2.5in ht. Trim the wicks to 1/4" before every lighting. To maximize burn time, allow the candle to burn until the molten pool has reached the glass wall. You can continue to burn the candle at this point. To prevent uneven burning, use a metal tool to redirect a curled or angled wick to the opposite direction. To prevent wick breakage when doing this, be sure to nudge the wicks below the level of the molten pool where the wicks are not burned and thus stronger. If you need to clear any leftover beeswax from your glassware before refilling or reusing, we recommend heat. A heat gun is great, if you happen to have one, and a strong hair dryer often does the trick -- warming the beeswax enough to wipe clean with a paper towel. You can also place our glass holders in your oven on its lowest setting for just a few minutes (please place the holder in there right away, while the oven heats up, as putting cold glass in a hot oven will cause it to crack).