Adepoy Compatible with Fitbit Inspire HR/Fitbit Inspire/Fitbit Ace 2 Adjustable Replacement Wristbands Waterproof Soft Sport Bands, Women Men Small size fits 5.5"-7.1" wrists - Walmart.com
Amazon.com: Fitbit Inspire HR Heart Rate and Fitness Tracker, One Size (S and L Bands Included), 1 Count : Sports & Outdoors