Compatible Models: These sport nylon bands are compatible with Fitbit Inspire 3, Inspire 2, Inspire, Inspire HR, Ace 3, and Ace 2 for both men and women. Comfortable Nylon Material: Made from skin-friendly premium nylon, these bands are soft, breathable, durable, lightweight, and washable. They are the perfect choice for outdoor sports, fitness, and daily wear. Adjustable Size: The adjustable design with strong velcro allows for easy length adjustments, ensuring a secure fit. These replacement bands are suitable for wrist sizes ranging from 6.3' to 8.3' (160mm-210mm). Security & Convenience: Features quick release spring bars on both sides for easy installation. Simply slide the pin into the notch of the watch to securely lock it in place. Change colors to match your daily attire quickly and without the need for tools. Dimensions: 7.76 x 3.11 x 0.47 inches.