HeartFeltMelts scented soy wax melt products are maximum scented to fill your home with scent for days and outperform our competitor melts or tarts. Each of my custom designed Heart Clamshells is 3.5 to 4 ounces by weight. These are a great value especially if you have a scent that you love. HeartFeltMelts are hand poured from natural 100% soy wax, free from any dyes or additives. The fragrances and essential oils I custom blend into my Melts have a rich, true, full-bodied quality giving them superior everlasting scent throw. Each of the HeartFeltMelts custom Clamshell contains enough HeartFeltMelts custom blended scented soy wax to last at least 190+ hours.