CANADAS FIRST SILK DENTAL FLOSS IN A MINI MASON JAR - REFILLABLE, REUSABLE JAR, ECO FRIENDLY. TWICE TESTED - FOR PURITY: KMH ECO DENTAL INNOVATION has Lab Results showing Silk Testing with between 97% - 100 %purity of fibre as silk. BUY ONCE, AND REFILL FOR LIFE. So much better for our environment, and a natural silk under the gum line makes more sense. Silk is of Nature and returns to Nature with as little damage in between as possible is our Goal.