Imprint 4 Penta Heavy Body - Refill: 2 - 300 mL Bases and 2 - 60 mL Catalysts. VPS Impression Material helps you optimize your impression procedure with innovative chemistry that lets you save time AND get accurate results. Imprint 4 Penta VPS Impression Material Refill (Heavy) is a superhydrophilic material that displaces moisture from the beginning in the unset state, preventing detail-disrupting voids for highly accurate and tear-resistant impressions. The material has a short intraoral setting time and a refreshing mint flavor that guarantees patients a stress-free dental experience.