These are made with our standard, durable silicone. They're heat, cold, UV resistant and are made with cooking grade silicone so they are food safe. If you want to wrap a notebook up and carry either a stylus, pen or pencil with you, these are a really simple solution.

We measure our band sizes when squished flat, so a 4 inch band is 4 inches flat and about 2.5 inches in diameter. While these stretch up to 3x, we suggest a maximum of 1.5-2x so that the pen loop holes aren't stretched too tight.

4-4 x 0.625 x 0.125 inch bands: diameter is 2.5 inches, we recommend a working stretch of 1.5-2x for these