Our bubble/flecked candle is filled with approximately 16oz of 100% soy wax. This is a handcrafted vessel and fill lines may vary depending on the thickness and width of the glass. We use phthalate free fragrances and a cotton wick for the cleanest burn. Approximate burn time is 80 hours. Yellow discoloration is a natural property of soy wax candles over time. Any yellowing, or discoloration, will not affect the quality and burn of the candle. Candles high in vanilla are more prone to yellowing/discoloration over time.