100% Cotton Lightweight: Polyester laces are a lightweight material that won't add extra weight to shoes. They are also easier to clean and dry than other materials. Customer Care: We are committed to providing customers with the best experience possible. We are constantly expanding our color and size options for our customers. If you have any concerns, don't hesitate to reach out to us. Compatibility: These shoe laces are compatible with Merrell shoes, giving them a brand-new look. Please note: The finished length of each shoelace will have an error range of 1-2 inches, and this shoelace has a slight elasticity, which makes the shoelaces become longer in a tight state. You can purchase a smaller shoelace size according to your needs. Superiority: The shoelaces are sealed with transparent glue at both ends to prevent them from fraying and coming apart. Durable Quality: Made from 100% Polyester materials. Polyester are usually stronger and more durable to wear than regular laces, and can withstand more stretching and pressure.