Fons & Porter Fabric Glue Stick is a water soluble fabric glue marker. The narrow glue marker allows for a more precise application and the Blue air-soluble ink shows where glue has been applied. The color fades as glue dries and any remaining glue washes out of most fabrics. Always test glue on a swatch of fabric first. This glue stick is refillable. Refill Water Soluble 2pc- These narrow sticks are great for precise application.