Velon San Rafael Basic -The Trinidad Ritual-Premium candles have a protective plastic cover, These are designed to be burned inside the cover, yes, burn inside the cover, fully complying with the European CE regulations on the use of them, by not using glass, we avoid, depending on the use of this product, the danger it poses to you and your loved ones in the event of breakage. -It is recommended that when used it be placed on top of a fireproof surface and be extremely vigilant with it, as with any type of flame. -Trinidad Ritual-Premium candles and candles are made with 80-20% paraffin and wax