1、Multifunctional armband (OPTIONAL) using split-type design brings a better running experience. Runners can use or take off the phone easily when needed. At the same time, the case can protect the phone perfectly in daily use. 2、The adjustable soft elastic strap enhances the wearing comfort. A secure key holder can keep your key safety while the earphone wire can be twined tidily in the slot of armband. 3、The case made of environmentally friendly PC + TPU material, free from foreign smell, is fashionable and cool for Samsung S8. 4、With precision-cut port holes and handy button, you can easily have access to all of your phone features. 5、Thanks for the built-in metal panel, the case can be compatible with most majority bands of magnetic car mount (NOT Include). Features: 1. Multifunctional armband (OPTIONAL) using split-type design brings a better running experience. Runners can use or take off the phone easily when needed. At the same time, the case can protect the phone perfectly in daily use. 2. The adjustable soft elastic strap enhances the wearing comfort. A secure key holder can keep your key safety while the earphone wire can be twined tidily in the slot of armband. 3. The case made of environmentally friendly PC + TPU material, free from foreign smell, is fashionable and cool for Samsung S8. 4. With precision-cut port holes and handy button, you can easily have access to all of your phone features. 5. Thanks for the built-in metal panel, the case can be compatible with most majority bands of magnetic car mount (NOT Include). Note: Armband is OPTIONAL. Magnetic car mount is NOT included. Specifications: Color: Black, Silver, Grey, Gold, Rose Gold, Navy (Optional) Armband: Optional Material: PC + TPU + Iron Package Weight: 48g (NO armband); 105g (Including armband) Package List: 1 x Phone Case 1 x Armband (Optional)