Premium Silicone Material : Made of premium silicone material, soft lightweight, skin-friendly comfortable, waterproof durable, smooth and does not irritate the skin. Design: New metal magnetic clasp, use moving the magnetic clasp can change wristband size to the suitable for different wrists. which is super magnetic and can ensure the safety of your watch during strenuous exercise from falling off, locks onto the wrists precisely and securely, and is easy to adjust, comfortable to wear. Easy to Installation: The silicone band comes with watch lugs on both ends, which locks onto the watch interface precisely and securely. without any tools, easy to install and removed with one click. easy to change different colors & styles for every occasion to wear.