【Adjustable Sizes】Small is for 6.4"- 8.3" wrist, and Large is for 7.7"- 9.2" wrist.This Replacement Bands are Compatible with Fitbit Charge 3 and Charge 4 / Charge 3 / SE.It's suitable for most wrists,especially for big and sportsman.
【High Performance Material】Made of High Quality Silicone,durable,flexible and smooth bands,which Charge 4 Charge 3 bands are yet surprisingly comfortable to wear.The air holes design can always keep your wrist cool and dry, to avoid suffering sweat and stuffiness.
【Double Layers Design】Double layers and colors join seamlessly together with amaizing various colors,which are perfect for more occasions for you. Specially for sports and outdoor,so it's a bit longer and thicker than others.
【Upgraded Connectors】Upgraded adapters and pin-and-tuck can ensure your bands joint securely and tightly,and protect your activity Tracker from sliding out or popping off. It's easy to install and remove by one time push.
【Warranty Ensured】 1-Year-Refund Quality Guarantee will be kept for you.We beleive that your wonderful experience will be our unique adwards.