[Compatible Models --- Only compatible with RUI@MEN D1 1.85" Smart Watches. Please confrim your model: Please check your watch model before you order it *SINGLE-LAYER PATTERN: Lamshaw Scrunchie elastic replacement strap compatible with FRUI@MEN D1 1.85" Smart Watches is USES the ultra supple Nylon material and the first-level cotton manufacture becomes. Above all we only use Single-Layer Pattern. Because the Double-Layer Pattern Stretch Bands will cracks more easily "*SKIN-FRIENDLY MATERIAL: Single-layer elastic band material which is skin-friendly durable breathable and lightweight design. Its a stretch bracelet wrist bands and fits snugly without constriction. Durable elastic band makes you feel comfortable to wear" *Multi-COLOURED BANDS: Multiple patterns for choice. The colorful band is usually perfect choice for any occasion *EASY CHANGE STRAPS: The sport band comes with watch lugs on both ends which locks onto your RUI@MEN D1 1.85" Smart Watches precisely and securely. Easy for installing directly and removing with one button]