Lightweight and Sturdy - Foam clay is lightweight and easy to handle while maintaining it's shape and form. Air Dry - Air dries within 24-48 hours, does not lose it's flexibility after drying, but it does maintain shape. Flexible - Our clay foam maintains it's shape but remains flexible even after drying. It can withstand some stress. Moldable - Pixiss Foam clay can be stretched, sculpted, shaped, or even pressed into silicone molds and will capture the mold in high detail. High Quality - Our forming foam is high quality and is not hazardous to use.