This silicone meld is safe up to 230 degrees celsius 440 degrees fahrenheit can be reused, innovative design, soft, varied styles and easy to clean. * Silicone is extremely stable properties, uv, ozone, extreme temperatures, and the vast majority of chemical agents can not change its character.The melds are durable and everlasting, you can reuse them as long as you would like. * Easily the soap out from the meld and made soap perfectly. * Easy to use / Easy t clean *soap weight about 120g to140g Not just for hand made soap making - use it to create sugar scrub, lotion bars, body massage bar, plaster ornaments, resin, candle, make your own bath products