Crafted with silicone,flexible, reusable. Nonstick, easy to separate, easy to clean,low carbon, can be recycled, resistance to low temperature minus 40 degrees, high temperature 230 degrees, uniform heating and cooling. Simple and useful, healthfulness, resistant and adaptabilitySuitable for Guitar Thumb Finger Picks, Guitar Plectrums, crafts making. Perfect for your family and you together.Unique for Someone You Value: Give your gifts to your lover, friend on birthdays, Christmas, New Years, weddings. Warm Tips:1. We only provide silicone mold. Please make your own!2. After squeezing and deforming, you only need to rest for a while, and then restores the states.