Monster Clay Premium Grade Modeling Clay is a reusable sulfur-free, professional oil/wax-based modeling medium. Composed entirely of non-toxic, food-safe components, Monster Clay has an ultra-smooth composition with a low melting temperature and a low adhesive feel that won't stick to tools or fingers. Monster Clay has a high plasticity and a unique elastic quality, just like soft taffy when it's warm. At an average room temperature, Monster Clay is sturdy enough to capture even the finest details and can be reused and re-melted indefinitely.