Material: Our resin puzzle molds are made of great material with excellent elasticity, superior high tear strength. It is reusable, durable, easy to strip and clean. Note£º After-using Tips: These molds are made of high-quality silicone, which ensures them to be smooth and durable. When finishing using, just wash it with soap water and wipe it with a soft towel.? After drying, keep it away from direct sunlight and dust to prolong its serving time. Compatibility Tips: Our resin puzzle molds are compatible with most resins or other casting material, such as wax, plaster, clay etc. If you want to design your crafts at your style, you can add mica powder, pearl pigment, dry flower, glitter and sequins into the resin molds.