They’re entirely transparent for perfect placement every time! They are durable. The photopolymer material is designed to last. Can you say sticky? (Don’t worry; in a good way.) These stamps stick amazingly well to our clear blocks. They’re age tested. They won’t yellow or cloud up over time. They use FDA, food-safe material. How far can you stretch your stamping creativity? We could go on, but we’ll let you try them for yourself.