Firm - creates a better cervical restoration. Flexes with the tooth to reduce stress at the margin. Reduces chances of leakage, sensitivity, staining, and pop-out. Patented reactive organic filler chemically bonds to the matrix. Won't dislodge, even when subjected to severe abrasion and occlusal pounding. More resilient than traditional microfills - much more resilient than hybrids. Polishes beautifully. Wear-resistant and durable.