Bonison Collapsible Food-grade Silicone Patterned Ice Cube Tray - Best Value Pack (7 pcs Random) Made of food grade silicone, BONISON heart-shape ice tray has great soft texture. Product is safe to use as molding plate with water and warm chocolate. Warning: our tray is design for use between -40 F to 446 F. Easy to use - fill with liquid, just push shape and pop the frozen ones out. Safe tool in kitchen for children to have fun family time with parents. Easy to clean - dishwasher safe; hand-wash is recommendation. Item is non-slippery and sturdy with high temperature toleration. Moderate size - 8.46*4.33*0.78in, light-weight - 2OZ, made with soft material. Engraved patterns helps to form shaped ice. Get some extra fun for your events