[Compatibility]: Perfect replacement strap for Fenix 5S/Fenix 5S Plus/Fenix 6S/Fenix 6S Pro/Fenix 7S/Fenix 7S Solar/Fenix 7S Sapphire Solar smartwatches. Not compatible with 26mm Fenix 5X/Fenix 5X Plus/Fenix 6X/Fenix 6X Pro, Fenix 5/Fenix 5 Plus/Fenix 6/Fenix 6 Pro 22mm. MaterialThe strap Fenix 5S Plus is made of high quality silicone to make it lightweight and waterproof; durably molded, moderately soft and comfortable to wear. Wrist: The Fenix 5S strap fits wrists from 135mm to 225mm (5.31" to 8.85"). Adjustable lock for easy fit. Ideal replacement for lost or damaged Fenix 5S straps (tracker not included). [Precision]: No tools are required. The adjustable closure is designed to match the size of the Fenix 5S plus strap. This makes it easy to adjust the strap to the size that suits you.