SPORTS ARMBAND for Samsung Galaxy S8. Great companion as you go about your routine. COMPATIBILITY - Fits the S8 without a phone case up to 5.9 x 2.7 x 0.35 inches. This armband features a slim pouch for your phone with access to the headphone jack and your center USB-C sync/power port. It also features a slot for your house key. USE: Great for all activity types from casual walking to high intensity workouts. SIZE - This armband is lightweight and fits arm sizes from 9 to 15 inches. Also we recommend that you use this armband without a case. It you have a larger arm size please see our armband extender which is sold separately. CARE - This armband can be safely hand washed and air dried after use.