Amzpas fitbit charge 2 hr replacement bands • the replacement bands are only designed for the fitbit charge 2 heart rate tracker. Replacement bands only and tracker not included. • The replacement bands are easy to install and remove, you just need to press the clip on your band and then connect your band with your tracker or disengage from your tracker. • The tpu is ideal material for fitbit charge 2 bands, as the tpu is not only durable and wear proof but also flexible and , it is widely used in medical work, sports, industry and agriculture as well. • 2 sizes available: Large size for 6.7″ – 8.1″wrist, small size for 5.5″ – 6.7″wrist, and pay attention that wrist circumference points to the band inner circumference, not the outer circumference. Please measure your wrist circumference correctly before you decide to choose the size. • Stylish and various colors for your alternative. We provide them with 10 colors black, white, blue, teal, purple, fushia, gray, blush pink, champagne, bronze and every different color shows your different beauty and unique personality, fits your favorite outfits in your wardrobe.