This replacement watch band is compatible with fitbit versa 3/versa sense, not for other models.Made of premium silicone material,no poison,no smelling,lightweight,environment-friendly durable and comfortable to wear.Cool Design makes it suitable for any occasions, which creates a unique sporty style.ultra clear looking with double holes design on the band to keep the wrist breathable and dry.Precise cutouts enables easy access to all ports and buttons, all features work seamlessly and snugly fit stays on under impact.Super easy to install, just put your smart watch in the case and make sure it is in the correct position.No need to use the pins to attach.