Dental Lace's unique feature is that it's refillable! Refills are made of vegan Candelilla wax on 100% silk floss. Each refill package contains two spools of floss, 33 yards each. The package is made of recyclable paperboard with a compostable plant based cellophane storage bag inside. Choose from our monthly plan for 6 months (receive one refill box every month for 6 months) or our quarterly plan (receive one refill box every quarter) and leave the rest with us!