Each tea light contains 3 battery powered tea lights. We do not recommend using an open flame in the tea lights. Each tea light is made of sustainable birch plywood and measures 213x77x91mm. Glassy Acrylic is used to help give an even richer shimmering look to the tea lights. Given that wood is a natural product, each tea light has it’s own character and will engrave and cut on the laser differently. Although the designs are the same, the tea lights that are sent may differ some from the pictures. The tea lights come flat packed and are easily put together.