Products include: 20 packs of wax, 20 packs of Heart-shaped pack wax and 20 packs of round pack wax. They are sized perfectly for wax melts and are suitable for a wide range of wax melt heaters. Healthy and Environmentally PET Plastic: Made of PET material, it is healthy, non-toxic, environmentally , and tasteless. The wax casting temperature for these wax models is up to 130°F (55°C), it will not interact with wax or dyes and affect the quality of the wax block. Clamshells: They are very strong, durable, tightly closed, easy to separate and fairly easy to open. Great for making wax melts: These are great if you're trying to make your own wax melt or melt an existing candle to convert into your wax melter. DIY Wax Melting Essentials: Great for making all types of wax cakes or soaps. There are 60 pieces in each set, 't worry about not enough, you can melt a lot of wax. Color: transparent Material: pet Package Contents: 60 Pack Wax Melt Containers Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.