Specially designed for Fitbit Charge 3 and Charge 4 Smart Watch. Premium Silicone,soft and comfortable wear,makes you feel comfortable when you do exercise,walking,playing or sleeping. Concise and vogue style beautifies your image. Snap in and out,easy to install and remove. Full Screen view, full access to all buttons and features. Specification Compatibility: Fitbit Charge 3 & Charge 4 Material: Silicone Rubber Band Width:22mm Band Length:S (92mm + 110mm)/ L(105mm + 128mm) S suitable for 130mm-195mm L suitable for 145mm-210mm Package Content: 1 X Fitbit Charge 3/Charge 4 Replacement Band