Our new plastic clam shell features a new heart shape and is made with our same quality thick plastic. An easy, no fuss way to make soy tarts. Simply pourSoyaLuna Melt/Pillar Soy Wax orTart wax or GW 464 (at a low temperature below 50°) into the clear plastic container for instant packaging. Snap off one cube and place in your oil burner or use the clam shell as a mould and make your own heart embeds for soap or candles. (comes empty) hold approx 60 gms + fragrance