●elastic ●Package & Compatibility: This set includes 2 pairs of shoelaces and an instruction manual. These shoe laces are compatible with ON Cloud Series shoes. Please Measure original laces before purchasing. ●High-Quality Durability: Our elastic shoelaces suit both narrow and wide feet, easily stretching or tightening for an ideal fit. ●Advanced Design: Shoelaces feature silicone-sealed ends, resisting fraying and unraveling for extended durability and wear. ●Secure & Comfortable: Laces stay in place without adjustments, ensuring a comfortable, stable fit. No need to re-tie once installed. ●Customer Satisfaction: Were dedicated to providing the best experience, continuously expanding color and size options. Contact us for any concerns or questions.