Easy & safe to use in microwave,oven,freezer,and dishwasher. Sea Fondant MoldMade of food grade silicone,this fondant mold are sturdy and flexible to use. Easy To UseThese DIY seashells seahorse molds are soft and made of non-stick design,release easily after gently twist,the shapes popped out so easy,also it is easy to wash.old,you can also play your imagination to make jelly as well as sugarcraft.