Features: Blue-light blocking design for reduced eye strain Abrasion-resistant materials for long-lasting durability Adjustable, no-slip closure for a secure and customizable fit Silicone overlay for added grip and quick-drying performance ECG compatible WHOOP MG compatible (WHOOP device not included) Built to handle dirt, moisture, and shifting terrain Reinforced stainless steel metals for strength and stability Band made from 76% polyamide and 24% elastane with a silicone overlay Includes Band, Hook, Clasp, and Fast Link(TM) slider for easy band swapping